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Indian study finds big drop in COVID antibodies within four months of vaccination

By Jatindra Dash and Krishna N. Das BHUBANESWAR, India (Reuters) - A study https://www.researchsquare.com/article/rs-888762/v1 of 614 fully vaccinated health workers in India...
Indian study finds big drop in COVID antibodies within four months of vaccination © Reuters. FILE PHOTO: A woman receives a dose of COVAXIN coronavirus disease (COVID-19) vaccine manufactured by Bharat Biotech, during a vaccination drive organised by SEEDS, an NGO which normally specialise in providing relief after floods and other natural disast

By Jatindra Dash and Krishna N. Das

BHUBANESWAR, India (Reuters) - A study https://www.researchsquare.com/article/rs-888762/v1 of 614 fully vaccinated health workers in India found a "significant" drop in their COVID-fighting antibodies within four months of the first shot.

The findings could help the Indian government decide whether to provide booster doses as some Western countries reuters.com/world/uk/uk-pm-johnson-set-out-covid-19-booster-strategy-under-winter-plan-2021-09-13 have done.

Waning antibodies do not necessarily mean that immunised people lose their ability to counter the disease, as the body's memory cells may still kick in to offer substantial protection, said the director of a state-run institute that did the study.

"After six months, we should be able to tell you more clearly whether and when a booster would be needed," Sanghamitra Pati of the Regional Medical Research Centre, based in the eastern city of Bhubaneswar, told Reuters on Tuesday.

"And we would urge similar studies in different areas for pan-India data."

British researchers said last month that protection offered by two doses of the Pfizer/BioNTech and the AstraZeneca (NASDAQ:AZN) vaccines begins to fade within six months https://www.reuters.com/business/healthcare-pharmaceuticals/covid-jab-protection-wanes-within-six-months-uk-researchers-2021-08-25.

The Indian study, published in the Research Square pre-print platform but yet to be peer reviewed, is one of the first such done in the country involving its main two vaccines - Covishield, a licensed version of the AstraZeneca shot, and domestically developed Covaxin.

Health officials say though they are studying the evolving science on booster doses, the priority is to fully immunise India's 944 million adults. More than 60% of them have received at least one dose and 19% the required two doses.

COVID cases and deaths in India have come down sharply since a peak of more than 400,000 infections in early May. India has reported 33.29 million cases in total and 443,213 deaths.

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28-09-2021 04:43:45 (UTC+7)

EUR/USD

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 EUR/USD1.1697↑ Buy
 GBP/USD1.3703↑ Buy
 USD/JPY110.99↑ Sell
 AUD/USD0.7287Neutral
 USD/CAD1.2626Sell
 EUR/JPY129.83Sell
 EUR/CHF1.0837↑ Buy
 Gold1,749.85↑ Sell
 Silver22.637Neutral
 Copper4.2797Neutral
 Crude Oil WTI75.41↑ Sell
 Brent Oil78.61↑ Sell
 Natural Gas5.860↑ Buy
 US Coffee C194.98↑ Buy
 Euro Stoxx 504,165.48↑ Sell
 S&P 5004,443.11↑ Sell
 DAX15,573.88↑ Sell
 FTSE 1007,063.40↑ Sell
 Hang Seng24,208.78↑ Buy
 Small Cap 20002,281.79↑ Sell
 IBEX 359,002.90Buy
 BASF64.740↑ Sell
 Bayer47.47↑ Buy
 Allianz196.19↑ Buy
 Adidas278.80↑ Sell
 Lufthansa6.561↑ Buy
 Siemens AG147.27↑ Sell
 Deutsche Bank AG11.120↑ Buy
Mua/Bán 1 chỉ SJC
# So hôm qua # Chênh TG
SJC Eximbank5,665/ 5,715
(0/ 0) # 900
SJC HCM5,635/ 5,700
(0/ 0) # 885
SJC Hanoi5,635/ 5,702
(0/ 0) # 887
SJC Danang5,635/ 5,702
(0/ 0) # 887
SJC Nhatrang5,635/ 5,702
(0/ 0) # 887
SJC Cantho5,635/ 5,702
(0/ 0) # 887
Cập nhật 28-09-2021 04:43:47
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