SA vaccine trial shocked by how many people already had Covid-19

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SA vaccine trial shocked by how many people already had Covid-19

‘We did not anticipate high number of asymptomatic people, which shows how extensive infection rate is’

Journalist

Almost a fifth of the 474 South Africans screened for SA’s Covid-19 vaccination trial were excluded from participation due to underlying conditions, including untreated hypertension, a lead researcher told Times Select.

Sub-investigator Clare Cutland said of that number, 202 had been enrolled in the trial and vaccinated to date.

She said 35 of the 162 patients enrolled by Monday (21%) tested positive for Covid-19 before receiving the vaccine...

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