Two types of Covid-19 vaccine, namely Pfizer-BioNTech and Johnson & Johnson (J&J), have been approved in SA with China’s Sinovac Biotech vaccine under clinical trials.
its vaccine had 91.3% efficacy against Covid-19, based on measuring how well it prevented symptomatic Covid-19 infection from seven days up to six months after the second dose.
It also found it to be 100% effective in preventing severe disease, as defined by the US Centers for Disease Control and Prevention , and 95.3% effective in preventing severe disease as defined by theThe J&J has between 72% and 93% efficacy against moderate and severe disease, depending on the variant of the virus.last week that people who initially received the jab and received the same one as a booster produced a much stronger antibody response than after receiving a single dose.
Released data suggested a booster shot given two months after the first dose could increase its vaccine’s effectiveness against mild and severe Covid-19 to between 75 and 94%, and 100% at least 14 days post-final vaccination.Pfizer-BioNTech and J&J have both been approved for safe use and can protect people from getting very sick, going to hospital and dying from Covid-19.
“The side effects from the J&J and Pfizer vaccines are similar. They are mild and will go away within three days. The best vaccine is the vaccine that is available and offered to you first,” said government.