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Since the beginning of the pandemic, herd immunity has been portrayed as the holy grail to overcome the COVID-19 pandemic. Abram Wagner, research assistant professor of Epidemiology, explains why reaching herd immunity might not be as simple as we thought, and what vaccine hesitancy and availability have to do with it.
Soon, Michigan residents will be able to search the number of coronavirus cases, hospitalizations and deaths by race, ethnicity, age and gender as University of Michigan experts expand the capabilities of the statewide coronavirus MI Safe Start dashboard.
India has stepped up its coronavirus vaccination drive amid a deadly second wave of infections. The country on Sunday breached the 100,000 daily caseload mark for the first time since the pandemic began.
United States coronavirus cases have increased again after hitting a low point late last month, and some of the states driving the upward trend have also been hit hardest by variants.
Vaccine rollout in the United States has been undeniably slow. And while we wait, worrisome new coronavirus variants are emerging, heightening the urgency to control the pandemic. Some variants, including ones first identified in Brazil, South Africa and the United Kingdom, have mutations that help the coronavirus evade parts of the immune system, raising the specter that some people might face a second round of COVID-19.
The Covid-19 vaccines authorized in the U.S. are approximately 95% effective at preventing people from getting sick with symptoms, according to Pfizer and Moderna, the companies that produce them. But scientists are still studying whether vaccination prevents transmission to others.