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Faced with a limited supply of shots and anxious populations waiting their turn, more countries are turning to an initially controversial strategy that’s now been vindicated by scientific studies: doubling or tripling the intervals between the first and second Covid vaccine dose.
A delay in getting the second shot not only allows the existing supply of shots to be more widely distributed, it boosts their protective power by giving the immune system more time to respond to the first inoculation. Levels of antibodies produced to fight off the virus are 20% to 300% higher when the follow-up vaccine comes later, new research shows.
Singapore is now extending dose intervals - previously three to four weeks - to six to eight weeks. - ST
SINGAPORE (Bloomberg): Faced with a limited supply of shots and anxious populations waiting their turn, more countries are turning to an initially controversial strategy that’s now been vindicated by scientific studies: doubling or tripling the intervals between the first and second Covid vaccine dose.
A delay in getting the second shot not only allows the existing supply of shots to be more widely distributed, it boosts their protective power by giving the immune system more time to respond to the first inoculation. Levels of antibodies produced to fight off the virus are 20% to 300% higher when the follow-up vaccine comes later, new research shows.
India News: Faced with a limited supply of shots, more countries are turning to an initially controversial strategy that’s now been vindicated by scientific studi
New Delhi:
More countries are turning to a once-controversial approach that has now been confirmed by scientific studies: doubling or tripling the time between the first and second Covid vaccine doses.
Delaying the second shot not only helps the current supply of shots to be spread more widely but also increases the defensive strength of the first inoculation by allowing the immune system more time to react to it. According to new research, levels of antibodies developed to combat the virus are 20 percent to 300 percent higher when the follow-up vaccine is given later.
That s good news for countries like Singapore, which is dealing with an unusual, but minor, increase in cases following last year s successful containment of the virus. To meet a target of covering the entire adult population with at least one shot by the end of August, the city-state is now expanding dose periods from three to four weeks to six to eight weeks.
Delayed second dose turns into a win for Covid-19 vaccine-starved places straitstimes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from straitstimes.com Daily Mail and Mail on Sunday newspapers.