Location - national, regional or metropolitan

How?   See How do I select items from the list box?.

Limit the population to specific report dates here. Alternately, you can leave the settings at the default values (All Report Dates) and choose to organize or group the data results by Date Report to show these stratifications.

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Date Reported

Pick any combination of years, quarters and months desired. Notes:   

• The dates range from January 1981 to December 2002. Note that previous releases of the data include case reports through December of the final year. For example, the Vintage 2001 dataset includes reports through December 2001.
• The WONDER online databases's "Date Reported" variable is the "dxdate" variable in columns 11-16 of the APIDS dataset. This value indicates the date when CDC first received information about the case.
• When the data results are exported to a file, the date values are displayed in a separate column, as shown below.

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Example Date Codes and Labels
1982	1982
1982/Q1	1st Quarter, 1982
1982/01	January, 1982

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Limit the population to specific diagnosis dates here. Alternately, you can leave the settings at the default values (All Diagnosis Dates) and choose to organize or group the data results by Date Diagnosis to show these stratifications.

Date Diagnosed

Pick any combination of years, quarters and months desired. Notes:   

• The dates range from January 1981 to December 2002. Note that previous releases of the data include case reports through December of the final year. For example, the Vintage 2001 dataset includes reports through December 2001.
• About date of diagnosis: CDC collects dates of diagnosis for each AIDS-indicator disease, and, for patients with severe immunosuppression, the date of the CD4⁺ T-lymphocyte test. From this information, a single date of diagnosis is calculated for each patient; it is the earliest of these dates.
• The WONDER online databases's "Date Diagnosed" variable is the "repdate" variable in columns 5-10 of the APIDS dataset. This value indicates the month of diagnosis of first AIDS-indicator opportunistic condition.
• When the data results are exported to a file, the date values are displayed in a separate column, as shown below.

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Example Date Codes and Labels
1982	1982
1982/Q1	1st Quarter, 1982
1982/01	January, 1982

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Limit your data for any of the following data elements:

1. Age at Diagnosis - age groups (age groups from less than 1 year to 65 and older);
2. Country of Birth - born in US, possessions or territories, or foreign born;
3. Race or Ethnicity - American Indian / Alaskan Native, Asian / Pacific Islander, Black, Hispanic, White, Unknown;
4. Sex and Sexual Orientation - female (any orientation), male (bisexual), male (heterosexual or pediatric), male (homosexual) or unknown classification).

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Age at Diagnosis

Select any number of age groups to limit your query. Age groups range from less than 1 year old to 65 years and over.

Notes:   

• The "35-39 years old" age group also contains those patients with the age at diagnsis not reported.
• The WONDER online databases's "Age at Diagnosis" variable is from the APIDS "Age" variable in column 1. This value indicates the age group at diagnosis of the first AIDS-indicator opportunistic condition
• When the data results are exported to a file, the age group code values are displayed in a separate column, as shown below.

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Age at Diagnosis
Codes	Labels
0	Less than 1 year old
1	1 to 12 years old
2	13 to 19 years old
3	20 to 24 years old
4	25 to 29 years old
5	30 to 34 years old
6	35 to 39 years old   or age is missing
7	40 to 44 years old
8	45 to 49 years old
9	50 to 54 years old
A	55 to 59 years old
B	60 to 64 years old
C	65 years old or older

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Country of birth

Select any combination of values.

Notes:   

• Patients with missing or not reported values are coded as having been born in the United States.
• The WONDER online databases's "Country of Birth" variable is from the APIDS "Birth" variable in column 21. This value indicates whether the patient was born in the United States or associated areas.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Country of Birth
Codes	Labels
1	Patient was born in the United States or its dependencies and possessions, or place of birth was not specified.
2	Patient was born outside the United States.

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Race or Ethnicity

Select any combination of values.

Notes:   

• Patients with Hispanic ethnicity are coded as Hispanic regardless of race.
• The WONDER online databases's "Race or Ethnicity" variable is from the APIDS "race" variable in column 3. This value indicates the race or Hispanic ethnicity of the patient.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Race or Ethnicity
Codes	Labels
5	American Indian / Alaskan Native
4	Asian / Pacific Islander
2	Black (and also not Hispanic)
3	Hispanic
1	White (and also not Hispanic)
9	Unknown

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Sex and Sexual Orientation

Select any combination of values.

Notes:   

• Female patients are only classified as female.
• Male pediatric cases (patient less than 13 years old at the time of diagnosis) are grouped with male heterosexual cases.
• Cases with no reported classification are grouped with male homosexual cases.
• The WONDER online databases's "Sex and Sexual Orientation" variable is from the APIDS "sexclass" variable in column 2. This value indicates the sexual classification of patient.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Sex and Sexual Orientation
Codes	Labels
4	Female (any)
2	Male (bisexual)
3	Male (heterosexual or pediatric)
1	Male (homosexual) or Unknown Classification

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Limit your data for any of the following data elements:

1. Multiple Modes of Exposure - pediatric (not assessed), single mode of transmission is indicated, patient has additional risks, patient's exposure is not reported or identified;
2. HIV Exposure Category - hemophilia/coagulation disorder, heterosexual contact, IV drug use (females and heteosexual males), male homo/bisexual and IV drug use, male homo/bisexual contact, mother with HIV or HIV risk, pediatric hemophilia, pediatric receipt of blood, pediatric risk not reported or indentified, receipt of blood, blood components or tissue, risk not reported or identified;
3. Heterosexual Partner is HIV Positive? - no, yes, missing or invalid;
4. Heterosexual Partner is Bisexual Male? - no, yes, missing or invalid;
5. Heterosexual Partner is an IV drug user? - no, yes, missing or invalid;
6. Heterosexual Partner has other risks? - no, yes, missing or invalid;

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Multiple Modes of Exposure

Select any combination of values.

Notes:   

• The Multiple Modes of Exposure data element indicates if the patient has risk(s) of exposure to HIV other than the one indicated by exposure.
• Multiple Modes of Exposure data are reported only for adult/adolescent patients (13 years old or older at the time of diagnosis).
• The Multiple Modes of Exposure data element is from the "multrisk" variable in column 20 of the APIDS dataset, and indicates if patient had more than one risk of exposure to HIV.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Multiple Modes of Exposure
Codes	Labels
	Pediatric Cases - Multiple risks of exposure not assessed
0	Patients only mode of exposure to HIV is indicated
1	Patient has additional risk(s) of exposure
2	Patients mode of exposure is not reported or identified

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HIV Exposure Category

Select any combination of values.

Notes:   

• About Exposure Category:   Some patients may have more than one mode of exposure to HIV. For surveillance purposes, AIDS cases are counted only once in a hierarchy of exposure categories. Persons with more than one reported mode of exposure are listed in the category that appears first in the exposure hierarchy, except for men with both a history of sexual contact with other men and injecting drug use. These patients make up a separate exposure category. Persons with multiple reported modes of exposure are indicated in Multiple Modes of Exposure.
• "Men who have sex with men" cases include men who report sexual contact with other men (i.e., homosexual contact) and men who report sexual contact with both men and women (i.e., bisexual contact).
• "Heterosexual contact" cases are persons who report specific heterosexual contact with a person with, or at increased risk for, HIV infection (e.g., an injecting drug user).
• "Risk not reported or identified" cases are persons with no reported history of exposure to HIV through any of the routes listed in the hierarchy of exposure categories. Risk not reported or identified cases include persons who are currently under investigation by local health department officials; persons whose exposure history is incomplete because they died, declined to be interviewed, or were lost to follow-up; and persons who were interviewed or for whom other follow-up information was available and no exposure mode was identified. Persons who have an exposure mode identified at the time of follow-up are reclassified into the appropriate exposure category.
• Adult/adolescent patients and pediatric patients have separate exposure categories.
  Adult/adolescent exposure categories:
  1 - Men who have sex with men
  2 - Injecting drug use
  
  3 - Men who have sex with men and inject drugs
  
  4 - Hemophilia/coagulation disorder
  
  5 - Heterosexual contact with a person with, or at increases risk for, HIV infection
  
  7 - Receipt of blood transfusion, blood components, or tissue
  
  8 - Risk not reported or identified
  Pediatric exposure categories:
   9 - Pediatric hemophilia/coagulation disorder
  
  10 - Mother with, or at risk for, HIV infection
  
  11 - Pediatric receipt of blood transfusion, blood components, or tissue
  
  12 - Pediatric risk not reported or identified
• The HIV Exposure Category variable in the WONDER online database is from the Exposure variable in columns 18-19 in the APIDS dataset. This variable indicates the patient's mode of exposure to HIV.
• About Pattern II countries:  
  • "Pattern II" is a term adopted by the World Health Organization, and refers to countries with a distinctive pattern of HIV transmission. It is observed in areas of central, eastern, and southern Africa and in some Caribbean countries. In these countries, most of the reported cases occur in heterosexuals; the male to female ratio is approximately 1 to 1; and perinatal transmission is more common than in other areas. Intravenous drug use and homosexual transmission either do not occur or occur at low levels.
  • Adults/adolescents born, or who had sex with someone born, in a country where heterosexual transmission was believed to be the predominant mode of HIV transmission (formerly classified as "Pattern-II countries" by the World Health Organization) are no longer classified as having heterosexually acquired AIDS. Similar to case reports for other persons who are reported without behavioral or transfusion risks for HIV, these reports are now classified (in the absence of other risk information which would classify them into another exposure category) as "no risk reported or identified" (see Morbidity and Mortality Weekly Report, March 11, 1994).
  • Children whose mother was born, or whose mother had sex with someone born, in a Pattern-II country are now classified (in the absence of other risk information which would classify them into another exposure category) as "Mother with/at risk for HIV infection: has HIV infection, risk not specified."
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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HIV Exposure Category
Codes	Labels
04	Hemophilia/coagulation disorder
05	Heterosexual contact with HIV
02	IV drug use (female and hetero male)
03	Male homo/bisexual and IV drug use
01	Male homosexual/bisexual contact
10	Mother with HIV, or HIV risk
09	Pediatric hemophilia
11	Pediatric receipt of blood
12	Pediatric risk not reported or identified
07	Receipt of blood, blood components or tissue
08	Risk not reported or identified

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Heterosexual Partner is HIV Positive?

The possible values are No, Yes, Missing or Invalid. Select any combination of values.

Notes:   

• This data element is recorded only for cases where the mode of transmission is heterosexual contact.
• About hemophiliacs:   This data element is reported as Missing or Invalid (value "9") for patients with hemophilia, regardless of whether the exposure information is in fact unknown. This restriction is necessary in order to comply with the Assurance of Confidentiality. Of the 4,596 AIDS cases reported through December 1995 among adults/adolescents with hemophilia, less than 4 percent also reported heterosexual contact with a person at increased risk for AIDS or HIV infection.
• This data element is from the "sexhiv" variable in column 25 of the APIDS dataset, which indicates sex with a person known to be infected with HIV or to have AIDS, but whose mode of exposure is unknown.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Heterosexual Partner is HIV Positive?
Codes	Labels
0	No
1	Yes
9	Missing or Invalid

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Heterosexual Partner is Bisexual Male?

The possible values are No, Yes, Missing or Invalid. Select any combination of values.

Notes:   

• This data element is recorded only for cases where the patient is female, and the mode of tranmission is hetersexual contact.
• About hemophiliacs:   This data element is reported as Missing or Invalid (value "9") for patients with hemophilia, regardless of whether the exposure information is in fact unknown. This restriction is necessary in order to comply with the Assurance of Confidentiality. Of the 4,596 AIDS cases reported through December 1995 among adults/adolescents with hemophilia, less than 4 percent also reported heterosexual contact with a person at increased risk for AIDS or HIV infection.
• This data element is from the "sexbi" variable in column 22 of the APIDS dataset, which indicates Sex with a bisexual man (women only).
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Heterosexual Partner is Bisexual Male?
Codes	Labels
0	No
1	Yes
9	Missing or Invalid

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Heterosexual Partner is an IV Drug User?

The possible values are No, Yes, Missing or Invalid. Select any combination of values.

Notes:   

• This data element is recorded only for cases where the mode of transmission is heterosexual contact.
• About hemophiliacs:   This data element is reported as Missing or Invalid (value "9") for patients with hemophilia, regardless of whether the exposure information is in fact unknown. This restriction is necessary in order to comply with the Assurance of Confidentiality. Of the 4,596 AIDS cases reported through December 1995 among adults/adolescents with hemophilia, less than 4 percent also reported heterosexual contact with a person at increased risk for AIDS or HIV infection.
• This data element is from the "sexiv" variable in column 23 of the APIDS dataset, which indicates sex with a person who is an injecting (intravenous) drug user.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Heterosexual Partner is IV Drug User?
Codes	Labels
0	No
1	Yes
9	Missing or Invalid

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Heterosexual Partner has Other Risks?

The possible values are No, Yes, Missing or Invalid. Select any combination of values.

Notes:   

• This data element is recorded only for cases where the mode of transmission is heterosexual contact.
• This data element is coded as Yes (value "1") when the hetersoexual partner has hemophilia, or is a blood transfusion recipient.
• About hemophiliacs:   This data element is reported as Missing or Invalid (value "9") for patients with hemophilia, regardless of whether the exposure information is in fact unknown. This restriction is necessary in order to comply with the Assurance of Confidentiality. Of the 4,596 AIDS cases reported through December 1995 among adults/adolescents with hemophilia, less than 4 percent also reported heterosexual contact with a person at increased risk for AIDS or HIV infection.
• This data element is from the "sexother" variable in column 24 of the APIDS dataset, which indicates sex with a person with hemophilia, or sex with a transfusion recipient.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Heterosexual Partner has Other Risks?
Codes	Labels
0	No
1	Yes
9	Missing or Invalid

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Limit your data for any of the following data elements:

1. Case definition - pre-1985 surveillance definition, 1985 surveillance definition, 1987 definition and diagnosed definitively, 1987 definition and diagnosed presumptively, 1993 definition and diagnosed definitively, 1993 definition and diagnosed presumptively, 1993 definition and diagnosed immunologically;
2. Vital Status - alive (not reported dead before 2001), dead (reported dead prior to 2001).

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Case Definition

Select any combination of values.

Notes:   

• Note that all cases included in this dataset meet the current (1993) surveillance case definition. This data element indicates the other case definitions that are also applicable to the patient.
• About the 1993 surveillance definition for AIDS:
  1. the definitive diagnosis refers to pulmonary tuberculosis, recurrent pneumonia, and/or cervical cancer;
  2. the presumptive diagnosis refers to pulmonary tuberculosis and/or recurrent pneumonia;
  3. the immunologic diagnosis refers to severe HIV-related immunosuppression.
• The Case Definition data item reflects changes made over time to the CDC surveillance definition for AIDS. Only cases meeting the current (1993) surveillance definition are included in this data set. The Case Definition data item indicates whether the patient also met the pre-1985, 1985, or 1987 surveillance definition, and whether the diagnosis, if it meets the 1987 or 1993 definition, was definitive or presumptive. Cases that meet more than one of these surveillance definitions are classified into the category listed first. For more information about the 1993 definition, see Morbidity and Mortality Weekly Report, December 18, 1992, Recommendations and Reports.
• About the AIDS case definition category:  
  • Patients may develop additional conditions indicative of AIDS after their initial AIDS diagnosis. The case report form may not be updated to reflect additional conditions. Some persons reported as meeting only the immunologic criteria may have concurrent or prior opportunistic infections or conditions that are not included in the case report. Therefore, cases reported as meeting only the criteria added to the case definition in 1993 may include persons who meet the criteria in 1987 definition.
  • There is rare form of HIV called Type O that is found in western Africa. The available tests for HIV do not always detect the Type O strain. This means that blood programs must take special precautions to keep this virus out of the blood supply by not taking blood donations from those who have been where the virus is found. Persons who were born in or lived in Cameroon, Central African Republic, Chad, Congo, Equatorial Guinea, Gabon, Niger and Nigeria since 1977 cannot be blood donors.
  • The Case Definition data values are defined as follows:
    1 - Case meets the pre-1985 surveillance definition.
    2 - Case meets the 1985 surveillance definition.
    3 - Case meets the 1987 surveillance definition
         and was diagnosed definitively.
    4 - Case meets the 1987 surveillance definition
         and was diagnosed presumptively.
    5 - Case meets the 1993 surveillance definition:
         pulmonary tuberculosis, recurrent pneumonia,
         and/or cervical cancer (definitive diagnosis).
    6 - Case meets the 1993 surveillance definition:
         pulmonary tuberculosis and/or
         recurrent pneumonia (presumptive diagnosis).
    7 - Case meets the 1993 surveillance definition:
         severe HIV-related immunosuppression.
• Historical background of case definition revisions:  
  Before HIV was identified as the etiologic agent for AIDS, CDC defined a case of AIDS (for surveillance purposes) as a disease, at least moderately indicative of a defect in cell-mediated immunity, occurring in a person with no known cause for diminished resistance to the disease. Such diseases included Pneumocystis carinii pneumonia, Kaposi's sarcoma, and many other serious opportunistic infections (see American Journal of Medicine, March 1984, pages 493-500). With identification of HIV as the causative agent for AIDS and the availability of laboratory tests to detect HIV antibody, the case definition was expanded to reflect an increased understanding of HIV infection in 1985 (see CDC's Morbidity and Mortality Weekly Report, June 28, 1985, pages 373-375) and in 1987 (see Morbidity and Mortality Weekly Report, August 14, 1987, supplement, pages 3S-15S). These revisions applied to persons with laboratory evidence for HIV infection. Among diseases added in 1985 were disseminated histoplasmosis, chronic isosporiasis, and certain non-Hodgkin's lymphomas. Among those added in 1987 were extrapulmonary tuberculosis, HIV encephalopathy, and HIV wasting syndrome. In children, recurrent, serious bacterial infections were also added. In addition, the 1987 revision allowed certain indicator diseases to be diagnosed presumptively based on clinical presentation rather than "confirmed" by laboratory or diagnostic methods.

  To be consistent with standards of medical care for HIV-infected persons and to more accurately reflect the number of persons with severe HIV-related immunosuppression who are at highest risk for HIV-related morbidity and most in need of close medical follow-up, the surveillance definition was expanded on January 1, 1993 (see CDC's Morbidity and Mortality Weekly Report, Recommendations and Reports, December 18, 1992). This expansion includes all HIV-infected adults and adolescents who have less that 200 CD4+ T-lymphocytes/µL or a CD4+ T-lymphocyte percent of total lymphocytes less than 14, or who have been diagnosed with pulmonary tuberculosis, invasive cervical cancer, or recurrent pneumonia. The addition of pulmonary tuberculosis, recurrent pneumonia, and invasive cervical cancer in HIV-infected adults and adolescents to the 23 clinical conditions listed in the 1987 surveillance definition reflects their documented or potential importance in the HIV epidemic.

  While the reported incidence of AIDS increased only 3 to 4 percent as a result of the 1985 revision, the 1987 revision greatly increased the numbers of reported cases. Roughly one fourth of all adults/adolescents who were both diagnosed and reported in the year following the 1987 revision were reported based only on the additional criteria included in the 1987 revision. Furthermore, the proportion of cases meeting only the revised criteria was higher in Hispanics and non-Hispanic blacks than in non-Hispanic whites, higher in heterosexual injecting drug users, and lower in men who have sex with men. The 1993 revision has had substantial impact on the number of reported cases. The immediate increase in case reporting was largely attributed to the addition of severe immunosuppression to the definition; a smaller impact was due to the addition of pulmonary tuberculosis, recurrent pneumonia, and invasive cervical cancer, since many persons with these diseases also have a CD4+ T-lymphocyte count of less than 200 cells/µL. The early effects of expanded surveillance were greater than long-term effects because prevalent as well as incident cases of immunosuppression were reported after implementation of the expanded surveillance case definition. In recent years, the effect on the number of reported cases has been smaller. Due to the large number of cases reported based on criteria in only the revised case definitions and to the inconsistent use of the revised case definitions in different populations, analyses of trends in AIDS cases must take these revisions into account.

• This data element is from the "categ" variable in column 4 of the APIDS dataset, which indicates which of the CDC AIDS case revisions the patient meets.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Case Definition categories
Codes	Labels
1	Pre-1985 surveillance definition
2	1985 surveillance definition
3	1987 definition and diagnosed definitively
4	1987 definition and diagnosed presumptively
5	1993 definition and diagnosed definitively
6	1993 definition and diagnosed presumptively
7	1993 definition and diagnosed immunologically

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Vital Status

Select any combination of values.

Notes:   

• Vital Status indicates if the patient has died 2 years prior to the annual publication of the dataset. For example, the Vintage 1999 dataset reports whether patients have died before 1997.
• About the classification of Vital Status:
  • Patients diagnosed during the 2 most recent years are reported alive regardless of the patient's vital status.
  • AIDS prevalence rates calculated for the most recent two-year period should be interpreted with caution. The rates calculated will be artificially high because all persons diagnosed in this period are coded with the vital status of alive, even if a death has been reported to CDC for that person. This is to prevent inadvertent indirect identification of any record by linking a death date inferred from this data set to other publicly available data sets which contain death dates on individuals.
  • For more information on trends in AIDS, see Morbidity and Mortality Weekly Report, September 19, 1997 and April 24, 1998.
  • Patients survive for a variable amount of time following the diagnosis of AIDS. Because death usually occurs after the initial report to CDC, case reports may not be updated to reflect the change in vital status. As a result, reporting of deaths among AIDS patients may be delayed or incomplete. However, states are required to perform periodic reviews of death certificates and state death registries to identify unreported cases, and to update vital status of known cases. In addition, 16 states participated in a special project to match their case registries to the National Death Index to assess the completeness of reporting and to identify deaths among cases that died out-of-jurisdiction.
• This data element is from the "death" variable in column 17 of the APIDS dataset, which indicates the vital status of the patient, 2 years prior to data release.
• When the data results are exported to a file, the code values are displayed in a separate column, as shown below.

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Vital Status
Codes	Labels
0	Alive: Not reported dead before (year)
1	Dead: Reported dead before (year)  efore 2001

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Export Results:		If checked, then query results are exported to a local file. More information on how to import this file into other applications can be found here. How?   See CheckBox.
Show Totals:		If checked, then totals and sub-totals display in the results table. How?   See CheckBox.
Show Zero Values:		If checked, then rows containing zero counts display in the results table. If unchecked, then zero count rows are suppressed. How?   See CheckBox.
Precision:		Precision is not available for this dataset because case counts are whole numbers.
Data Access Timeout:		This value specifies the maximum time to wait for the data access for a query to complete. If the data access takes too long to complete, a message will be displayed and you can increase the timeout or simplify your request. If you can't complete a request using the maximum timeout, contact user support and we will try to run a custom data request for you.