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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• Vaccination-fraudsters to face full might of the law.

[Thread] 1. Glenda Gray, co-lead investigator, #Sisonke:

We now have results to show the #JnJ jab provides significant protection @ the #DeltaVariant in SA.

What is Sisonke?

The Sisonke study used the #JnJ jab to look @ the effectiveness of the jab among SA #HealthWorkers pic.twitter.com/L4lrfPmLL9

— Mia Malan (@miamalan) August 6, 2021

2. Gray:
1. #Sisonke vaccinated 477 234 #HealthWorkers
2. 122 sites were used to vaccinate health workers pic.twitter.com/OtDB53nNnx

— Mia Malan (@miamalan) August 6, 2021