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Vaccine Preventable Diseases

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Pertussis (Whooping Cough)

Florida Health

Disease Control

The COVID-19 pandemic is affecting health care seeking behavior, which may be impacting the diagnosis and reporting of pertussis cases that are shown in this report. For more information on the COVID-19 pandemic in Florida, please visit FloridaHealthCOVID-19.gov.

August Key Points

In August, there
was 1 Case
99 new cases
between March-August
No outbreaks have
occured
<1 year olds had
highest incidence
A graph showing a summary of pertussis cases reported by month in 2020 as compared to the previous 5-year average. In July 2020, 4 cases of pertussis were reported, which is below the previous 5-year average.

The number of pertussis cases reported in August decreased from the previous month and was below the previous 5-year average. Elevated case counts in early 2020 may be due to a change in the case definition for pertussis.

A map showing the previous 3-month average pertussis rates per 100,000 population. Counties with one or more cases reported in July are: Miami-Dade, Marion, Sarasota, and Taylor. Counties with a rate of 0.1-0.1 per 100,000 population are: Broward, Collier, Miami-Dade, Duval, Lake, Marion, Orange, Palm Beach, Pasco, Pinellas, Polk, and Sarasota Counties with a rate of 0.2-0.4 per 100,000 population are: Clay, Flagler, Martin, Santa Rosa, and Sumter Counties with a rate of 0.5-1.4 per 100,000 population are: Taylor

Ninety-nine pertussis cases were reported between March and August 2020, which is a 56% decrease compared to March to August 2019 (227 cases).

A graph showing a summary of the total number of pertussis cases reported by year with an emphasis on 2019. In total for each year there have been: 341 in 2015; 335 in 2016; 358 in 2017; 326 in 2018; 393 in 2019; and 200 in 2020.

From January 1, 2020 through August 31, 2020, 201 pertussis cases were reported in 38 counties.

A graph showing a bar graph of total cases compared to household associated cases and outbreak associated cases for July 2020 and the previous 3-month average. In July 2020, no cases were associated transmission within households or outbreak associated.

The average number of household-associated cases between March and August 2020 was three times lower than the average number of household-associated cases between March and August in 2019. No outbreak-associated cases have been identi!ed in 2020. For most pertussis cases, exposure to other known cases is never identified, and they are not able to be linked to outbreaks.

*Note: This page contains materials in the Portable Document Format (PDF). The free Acrobat Reader may be required to view these files.