The outbreak of disease caused by the new coronavirus has raised questions about...
LONDON - The outbreak of disease caused by the new coronavirus has raised questions about a phenomenon known as “herd immunity” and whether it might play a role in how the pandemic progresses.** Herd immunity refers to a situation where enough people in a population have immunity to an infection to be able to effectively stop that disease from spreading.
** With the new coronavirus infection — called COVID-19 — as more and more people become infected, there will be more people who recover and who are then immune to future infection. “But it doesn’t have to be –- and it won’t be –- this way,” said Matthew Baylis, a professor at the Institute of Infection, Veterinary and Ecological Sciences at Liverpool University.** By reducing the number of people that one person infects — with social distancing measures such as closing schools, working from home, avoiding large gatherings and frequent hand washing — the point at which herd immunity kicks in can be lowered.
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