South African health authorities will soon know the effectiveness of a second dose of the Johnson & Johnson Covid-19 vaccine against the Omicron variant.

This, according to professor Glenda Gray, from the South African Medical Research Council.

Gray says healthcare workers who received one dose of the J&J injection, and who picked up breakthrough infections, developed only mild forms of the disease.

Gray says about 218,000 healthcare workers have already gotten a second dose of the J&J injection.

Read the full report here.

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The Johnson & Johnson Covid-19 vaccine protected between 91 and 96% of healthcare workers against death.

This, according to researchers heading the Sisonke Covid-19 vaccine study, which was piloted here in South Africa.

According to co-lead investigator, professor Glenda Gray, the study was rolled-out to just under 500-thousand healthcare workers at 120 health-care sites.

Gray says the vaccine also proved to be effective against the Delta-variant of Covid-19.

Watch the full briefing here.

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