(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 December 14, 2019, with historical data. Reports of acute hepatitis A, legionellosis, meningococcal disease and pertussis increased. Reports of giardiasis, acute hepatitis B, acute hepatitis C, measles and mumps decreased.