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Boosters much less effective after 4 months, US officials say

Tara Abhasakun

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Photo by Shutterstock.

The US Centres of Disease Control and Prevention published a study yesterday that found that third jabs of Pfizer and Moderna lose much of their effectiveness four months after they’re given. The study compared how likely vaccinated and unvaccinated people were to test positive. It found that vaccines were 87% effective for people two months after they had their third jab, but by the fourth month were only 66% effective.

When the Omicron variant was dominant, third jabs were 91% effective at helping people who tested positive not need to be hospitalised for Covid-19 within two months after they were given. But they were only 78% effective for this by the fourth month. The study looked at 241,204 emergency room and urgent care visits, and 93,408 hospitalisations between August 26 2021 and January 22, 2022.

The CDC said it was important for people to consider getting more doses to raise their chances of being protected from Covid-19.

SOURCE: Bangkok Post

 

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    A Thai-American dual citizen, Tara has reported news and spoken on a number of human rights and cultural news issues in Thailand. She holds a Bachelor’s Degree in history from The College of Wooster. She interned at Southeast Asia Globe, and has written for a number of outlets. Tara reports on a range of Thailand news issues.

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