The Delta Variant
The Delta variant (also known as B.1.617.2 variant) of COVID-19 was first identified in India in December 2020. It spread rapidly through India, then Great Britain, and became the dominant strain in the U.S. earlier this month.
The World Health Organization (WHO) has called the Delta variant the "fastest and fittest" version of the COVID-19 virus, as it seems more contagious than other variants. Dr. F. Perry Wilson, a Yale Medicine epidemiologist explains:
"In a completely unmitigated environment—where no one is vaccinated or wearing masks—it’s estimated that the average person infected with the original coronavirus strain will infect 2.5 other people. In the same environment, Delta would spread from one person to maybe 3.5 or 4 other people.”
Based on what is known now, it appears that fully vaccinated people have protection against the Delta strain. However, a single dose of a two-dose vaccine - such as those offered by Pfizer and AstraZeneca - is not effective.
Are you concerned about the Delta variant of COVID-19?
|