South Africa to roll out AstraZeneca vaccine in steps to assess efficacy
JOHN REVILL SOUTH Africa will roll out AstraZeneca's coronavirus vaccine in a "stepped manner" to assess its ability to prevent severe illness, Professor Salim Abdool Karim, co-chair of South Africa's Ministerial Advisory Committee on COVID-19, said yesterday. South Africa said on Sunday it would put on hold its use of the AstraZeneca shot after research showing it was only minimally effective in preventing mild-to-moderate illness against a variant of the coronavirus now dominant in the country. Professor Salim Abdool Karim Speaking to a briefing of the World Health Organization (WHO), Abdool Karim said it was too early to say whether…