Monday, August 2

Vaccine doses

coronavirus, COVID-19, Hawaii, herd immunity, Massachusetts, Science, Vaccine doses, Vermont

Vermont is about to become the first state to reach herd immunity. Massachusetts and Hawaii are close behind.

Vermont is set to become the first US state to vaccinate 75% of its population with at least one dose — a milestone that may indicate it has reached herd immunity.For most of the pandemic, herd immunity has been a fluctuating — and often elusive — goal. Technically speaking, a population has reached herd immunity when an infected person passes the virus to fewer than one other person, on average. That means the virus can no longer pass easily from person to person.But Dr. Monica Gandhi, an infectious-disease expert at the University of California, San Francisco, considers herd immunity to be the threshold after which COVID-19 cases no longer lead to hospitalizations."Herd immunity is absolutely not eradication," she told Insi...