Feb 4, 2021
AZD1222 appears effective, reduces positive PCR tests
Early results from three trials assessing the safety and efficacy of the Oxford University/AstraZeneca Covid-19 vaccine, AZD1222, suggest that a single dose of the vaccine is 76% effective in preventing SARS-CoV-2 infection and the shot may also reduce onward transmission of the virus, researchers reported.
Oxford University explained that the study results which were published in
The Lancet showed “a single standard dose (SD) of the vaccine reduced PCR positivity by 67%, and that, after the second dose, the SD/SD schedule reduced PCR positivity by 49.5% overall,” according to Andrew J. Pollard, MRCP, FHEA, FIDSA, FRCPCH, and colleagues from the Oxford Vaccine Group. “These data indicate that [AZD1222], used in the authorized schedules, may have a substantial impact on transmission by reducing the number of infected individuals in the population.” The study authors also reported that participants age
Everything you need to know about coronavirus immunity as more than 10 million people get jab
The British Society for Immunology says understanding immunity to Covid-19 is key to exiting the pandemic - here is what we know about it
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More than 10 million people in the UK have received their first dose of a coronavirus vaccine.
Much has been said about how effective the jabs are at preventing people from getting Covid-19 and when enough people will be protected for things to start returning to normal.
The British Society for Immunology (BSI) says understanding immunity to Covid-19, induced both by natural infection and through vaccination, is key to exiting the pandemic.
Here is what we know about Covid-19 immunity:
What do we know about coronavirus immunity?
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More than 10 million people in the UK have received their first dose of a coronavirus vaccine.
Much has been said about how effective the jabs are at preventing people from getting Covid-19 and when enough people will be protected for things to start returning to normal.
The British Society for Immunology (BSI) says understanding immunity to Covid-19, induced both by natural infection and through vaccination, is key to exiting the pandemic.
Here is what we know about Covid-19 immunity:
Reducing the transmission rate has proven among the most challenging aspects of the pandemic response. The coronavirus has caused more than 26 million infections and 400,000 deaths in the U.S., according to the Centers for Disease Control and Prevention.
Reducing the transmission rate would help get the virus under control as countries around the world scramble to vaccinate their populations as quickly and safely as possible.
British Health Secretary Matt Hancock praised the findings on Twitter as absolutely superb. We now know that the Oxford vaccine also reduces transmission and that will help us all get out of this pandemic, he said in an interview with the BBC, according to the New York Times.