COVID-19 vaccinations

How effective is the COVID-19 vaccine?

The two currently available vaccines have an efficacy of between 70% and 90% at preventing Covid-19 symptoms, when measured 3 weeks after the first injection is given; however, they are also between 95% and 100% effective at preventing severe symptoms and hospitalisation.


After the second dose of the vaccine, the efficacy increases further, and the duration of its effect is also increased. However, while the vaccine can prevent you from getting COVID-19 symptoms, we don't yet know if it also stops you from spreading the virus to other people, so it's still important to follow social distancing guidance, and cover your nose and mouth in places where you are near other people.