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The study comes amid concerns about the Chinese vaccine's efficacy against azopdehgf

A booster dose of Sinovac Biotech's Covid-19 vaccine reversed a decline in antibody activities against the Delta variant, a study showed, easing some concerns about its longer-term immune response to the highly contagious strain of the virus. The study comes amid concerns about the Chinese vaccine's efficacy against Delta, which has become the dominant variant globally and is driving a surge in new infections even in the most vaccinated countries. Several countries which have relied heavily on the Sinovac vaccine have begun giving booster shots developed by Western manufacturers to people fully vaccinated with the Chinese shot. Neutralising antibody activities against Delta were not detected in samples taken from vaccine recipients six months after they received the second dose of Sinovac's CoronaVac vaccine, according to the study published on Sunday (Sept 5) before a peer review. But recipients of booster shots showed over 2.5-fold higher neutralising potency against Delta about four weeks after the third dose, compared with the level seen about four weeks after the second shot, researchers from Chinese Academy of Sciences, Furan University, Sinovac, and other Chinese institutions said in the paper. They did not discuss how specifically changes in antibody activity will affect Sinovac shot's efficacy in preventing people from getting sick from the variant. The number of Covid-19 cases here has doubled twice since Aug 23 and could double three more times before falling and stabilising, Health Minister Ong Ye Kung said on Friday (Sept 10). He noted that around 100 cases were reported on Aug 23. "From then, it's been rising along a very steep curve," Mr Ong said at a virtual press conference of the multi-ministry task force tackling Covid-19. Mr Ong, who co-chairs the task force, said that based on the experiences of other highly vaccinated countries, Covid-19 transmission waves do not last forever and will usually take about 30 to 40 days to peak before numbers fall and stabilise. However, during that period, daily cases can double every 10 days - which means Singapore should be prepared for four to five doubling cycles, added Mr Ong.https://www.reddit.com/r/GolfTeaTimesRyderCup/ https://www.reddit.com/r/RyderCupTeaTimes21st/ https://www.reddit.com/r/ShangChiFullMoviehq/ https://www.reddit.com/r/ShangChiMarvelTenRing/ https://www.reddit.com/r/Dune2021FullMovieHD/ https://www.reddit.com/r/MalignantFullMovieHQ/ https://www.reddit.com/r/MalignantFullMoviestr/ https://www.reddit.com/r/NoTimetoDieFulMovieHD/ https://www.reddit.com/r/NoTimetoDieFulMoviest/ https://www.reddit.com/r/NoTimetoDieFullMovies/ https://www.reddit.com/r/NoTimetoDieFullMovie/ https://www.reddit.com/r/VenomLetThreBeCarnage/ https://www.reddit.com/r/Venom2FullMoviehq/ https://www.reddit.com/r/Venom2021FullMovie/ https://www.reddit.com/r/Venom2FullMoviestram/ https://www.reddit.com/r/Venom2FullMovieon/ https://www.reddit.com/r/Venom2FullMoviestream/ https://www.reddit.com/r/NZvSArugbylivest/ https://www.reddit.com/r/SAvsNZrugbylivenow/ https://www.reddit.com/r/savsnzrugbylive/ https://www.reddit.com/r/AustraliavArgentinaru/ https://www.reddit.com/r/ArgentinavAustraliast/ https://www.reddit.com/r/ArgentinavAustralivon/ https://www.reddit.com/r/ArgentinavAustralives/ https://www.reddit.com/r/TheRugbyCham21st/ https://www.reddit.com/r/RyderCupGolflive21liv/ https://www.reddit.com/r/RyderCupGolflivest21/ https://www.reddit.com/r/RyderCupTeaTimesst/ https://www.reddit.com/r/RyderCupGolf21st/ https://www.reddit.com/r/RyderCupGolf21/ https://www.reddit.com/r/RyderCups21st/ https://www.reddit.com/r/RyderCup21livest/ https://www.reddit.com/r/RyderCup2021lives/ https://www.reddit.com/r/ZeroContactfullmovies/ https://www.reddit.com/r/ZeroContactfullmovie/ https://www.reddit.com/r/ApacheJunctionmovie/ https://www.reddit.com/r/ApacheJunctionfmovie/ https://www.reddit.com/r/Surge21FullMovie/ https://www.reddit.com/r/Surge21FullMoviehd/ https://www.reddit.com/r/IamYourManfullmovie/ https://www.reddit.com/r/ImYourManfullmovie/ https://www.reddit.com/r/DearEvanHansenst/ https://www.reddit.com/r/DearEvanHansenmovieHD/ https://www.reddit.com/r/DEHansenfullmovie/ https://www.reddit.com/r/DearEvanHansenhd/ https://www.reddit.com/r/FreeGuyfmovie/ https://www.reddit.com/r/NightmareAFullMovie/ https://www.reddit.com/r/Candyman21fmovie/ https://www.reddit.com/r/Thevoyeurs21onhd/ https://www.reddit.com/r/Cinderella21onhd/ https://www.reddit.com/r/TheMatrixResurections/ https://www.reddit.com/r/Kate2021FullMovie/ https://www.reddit.com/r/KateFullMovieHD/ He said the nation is now in the process of seeing cases double from 400 to 800 a day. "Beyond that, if we think in terms of five doubling cycles, there's two more to go - meaning daily cases may double from 800 to 1,600 and 1,600 to 3,200, hitting a peak before starting to come down and stabilise," he said, adding that whether or not this happens depends on the collective actions of everyone here. "Together, we will test extensively with the help of employers, reduce our interactions where possible, wear our masks properly and diligently, get ourselves tested when required, isolate ourselves when we are ill or when we test positive... and if we can do that, maybe we can avoid five doubling cycles, maybe we can get away with three or four before we settle down," said Mr Ong. He added that the "rapid and exponential" rise in daily cases is what every country that wants to live with Covid-19 must go through at some point. However, the task force wants to do so with two main objectives in mind. First, to have as few deaths here as possible. "Practically every country that has gone through this kind of transmission wave has suffered hospital collapses and high death tolls. We want to avoid that," said Mr Ong. If Singapore can do this, it can then achieve its second objective - avoid entering a long, hard lockdown, which places such as Vietnam and New South Wales are experiencing. "The key to going through this experience differently from other countries... is vaccination," said Mr Ong, adding that vaccines are very effective in protecting against severe illnesses.

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