(Starting week 1 of year 2020, Figure 1 will be discontinued.)
The figure above is a bar chart showing selected notifiable disease reports for the United States with comparison of provisional 4-week totals through January 5, 2019, with historical data. Reports of acute hepatitis A and measles increased beyond historical limits. Reports of giardiasis, acute hepatitis B, acute hepatitis C, legionellosis, meningococcal disease, mumps and pertussis decreased with acute hepatitis B decreasing beyond historical limits.