Edited by Samerosie at 21-1-2022 01:32 PM
Tak payah lawan this so called hujah apa kau tepek ni sebab kau sendiri either baca tajuk je lps tu made your conclusion atau saja nak hide the full information. Tapi aku rasa comprehension kau sendiri fail. Ni full article. Apa kes?
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Jan 19 (Reuters) - People who hadpreviously been infected with COVID-19 were better protected against the Deltavariant than those who were vaccinated alone (this is the key word),suggesting that natural immunity was a more potent shield than vaccines againstthat variant, California and New York health officials reported on Wednesday.
Protection against Delta was highest, however, among people who were both vaccinated and had survived a previous COVID infection, and lowest among those who had never been infected or vaccinated, the study found.
Nevertheless, vaccination remains thesafest strategy against COVID-19, according to the report published in U.S.Centers for Disease Control and Prevention (CDC) Morbidity and Mortality WeeklyReport.
The results do notapply to the Omicron variant of the virus, which now accounts for 99.5% of COVID-19 cases in the United States.
"The evidence inthis report does not change our vaccination recommendations," Dr. Ben Silk of the CDC and one of the study's authors told a mediabriefing."We know that vaccination is still the safest way to protectyourself against COVID-19," he said.
For the study, health officials in California and New York gathered data from May through November, which included the period when the Delta variant was dominant. It showed that people who survived a previous infection had lower rates of COVID-19 than people who were vaccinated alone.
That represented a change from the period when the Alpha variant was dominant, Silk told the briefing.
"Before the Delta variant, COVID-19vaccination resulted in better protection against a subsequent infection thansurviving a previous infection," he said. In the summer and fall of 2021, however,when Delta became the predominant circulating iteration of the virus in theUnited States, "surviving a previous infection now provided greaterprotection against the subsequent infection than vaccination," he said.
But acquiring immunity through natural infection carries significant risks. According to the study, byNovember 30, 2021, roughly 130,781 residents of California and New York haddied from COVID-19.
The analysis did notinclude information on the severity of initial infection, nor does it accountfor the full range of illness caused by prior infection. One important limitation to the study wasthat it ended before administration of vaccine booster doses was widespread.
Dr. Erica Pan, stateepidemiologist for the California Department of Public Health, said in an emailthat the study "clearly shows" that vaccines provide the safest protection against COVID-19 and they offer added protection for those with prior infections.
"Outside of thisstudy, recent data on the highly contagious Omicron variant shows that gettinga booster provides significant additional protection against infection,hospitalization and death,” Pan said.
Silk said the CDC is studying the impact ofvaccination, boosters and prior infection during the Omicron surge and expectsto issue further reports when that data becomes available.
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Post time 21-1-2022 12:39 PM
