Transmission Dynamics by Age Group in COVID-19 Hotspot Counties — United States, April–September 2020 | MMWR

Transmission Dynamics by Age Group in COVID-19 Hotspot Counties — United States, April–September 2020 | MMWR



Morbidity and Mortality Weekly Report (MMWR) — Transmission Dynamics by Age Group in COVID-19 Hotspot Counties — United States, April–September 2020 — The percentage of positive SARS-CoV-2 reverse transcription–polymerase chain reaction (RT-PCR) test results (percent positivity) is an important indicator of community transmission. CDC analyzed temporal trends in percent positivity by age group in COVID-19 hotspot counties before and after their identification as hotspots. Among 767 hotspot counties identified during June and July 2020, early increases in the percent positivity among persons aged ≤24 years were followed by several weeks of increasing percent positivity in persons aged ≥25 years. Addressing transmission among young adults is an urgent public health priority. You can learn more here: Morbidity and Mortality Weekly Report