Some Covid test positive after being vaccinated. Here is why, Health News, ET HealthWorld

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Some Covid test positive after being vaccinated. Here is whyThe scattered experiences from across the nation can play like a merciless irony: Somebody checks constructive for the coronavirus regardless that they’ve already obtained one or each doses of a Covid-19 vaccine.

Notable Examples
It has occurred to no less than three members of Congress not too long ago:

— Adriano Espaillat, D-N.Y.

— Stephen Lynch, D-Mass.

— Lori Trahan, D-Mass.

However it has been reported in folks in different walks of life, too, together with Rick Pitino, a Corridor of Fame basketball coach, and a nurse in California.

How Can That Occur?

Specialists say circumstances like these usually are not stunning and don’t point out that there was one thing improper with the vaccines or how they had been administered. Right here is why.

— Vaccines don’t work immediately. It takes a number of weeks for the physique to construct up immunity after receiving a dose. And the vaccines now in use in the US, from Pfizer-BioNTech and Moderna, each require a second shot a number of weeks after the primary to achieve full effectiveness.

— Nor do they work retroactively. You may already be contaminated and never realize it if you get the vaccine — even for those who not too long ago examined unfavorable. That an infection can proceed to develop after you get the shot however earlier than its safety absolutely takes maintain, after which present up in a constructive check consequence.

— The vaccines forestall sickness, however possibly not an infection. Covid vaccines are being approved primarily based on how effectively they preserve you from getting sick, needing hospitalization and dying. Scientists don’t know but how efficient the vaccines are at stopping the coronavirus from infecting you to start with, or at holding you from passing it on to others. (That’s the reason vaccinated folks ought to preserve carrying masks and sustaining social distance.)

— Even the very best vaccines aren’t good. The efficacy charges for Pfizer-BioNTech and Moderna vaccines are extraordinarily excessive, however they aren’t 100%. With the virus nonetheless spreading uncontrolled in the US, a number of the hundreds of thousands of not too long ago vaccinated folks had been sure to get contaminated in any case.

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