A Trinity College Dublin professor says the Oxford study indicates that shortening AstraZeneca's dosing interval will likely reduce, rather than enhance, vaccine effectiveness.
The government is still studying a mixed schedule of vaccines in light of a recent UK study that found a mixed two-dose schedule of the Pfizer and AstraZeneca vaccine can produce a better immune response than two AstraZeneca doses.
AstraZeneca followed by Pfizer induced higher antibodies and T cell responses than vice versa; both Covid-19 vaccine mixes induced higher antibodies than two doses of AstraZeneca.
The government is also studying mixing Covid-19 vaccines by using AstraZeneca as the first dose and Pfizer as the second to boost efficacy against new variants, says Khairy Jamaluddin.
The Covid-19 Immunisation Task Force says SELangkah admitted to booking AstraZeneca Covid-19 vaccination slots for individuals on the ImuniSEL database without getting prior consent.
Khairy Jamaluddin says he’s unsure if organisations that did mass bookings for AstraZeneca’s Covid-19 vaccine had obtained consent from the people they registered.