Why is the Johnson & Johnson vaccine a good first choice for the National Vaccination Programme?
It was tested in a large trial of almost 44 000 people from four continents, of whom 7 000 participants came from South Africa.
The study also provided a good picture of how the vaccine works against the new 501Y.V2 variant, which is dominant in South Africa and currently responsible for around nine in 10 of all COVID-19 infections detected during the second wave.
The South African trial showed that while the Johnson & Johnson vaccine is not going to prevent mild symptoms, it provides 57% protection against moderate-severe disease, 85% protection against severe disease and 100% protection against death.
By way of comparison, the Oxford-AstraZeneca vaccine provided only 27% protection against mild to moderate COVID-19 caused by the new 501Y.V2 variant.
It was tested in a large trial of almost 44 000 people from four continents, of whom 7 000 participants came from South Africa.
The study also provided a good picture of how the vaccine works against the new 501Y.V2 variant, which is dominant in South Africa and currently responsible for around nine in 10 of all COVID-19 infections detected during the second wave.
The South African trial showed that while the Johnson & Johnson vaccine is not going to prevent mild symptoms, it provides 57% protection against moderate-severe disease, 85% protection against severe disease and 100% protection against death.
By way of comparison, the Oxford-AstraZeneca vaccine provided only 27% protection against mild to moderate COVID-19 caused by the new 501Y.V2 variant.
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