The Delta variant is a strain of COVID-19 that was first detected in India, where it quickly became the dominant strain. It has been identified in 85 countries and is spreading rapidly among unvaccinated populations. Between May 8 and June 5, the Delta variant jumped from representing 1.3% of new cases in the United States to 10%. It now accounts for more than half of all new COVID-19 cases nationwide. Not only is this strain more contagious, doctors are reporting that it causes more severe illness and a faster onset of serious symptoms.
Overall COVID cases in Allegheny County remain low, largely showing the success of vaccination efforts.