Moderna or Novavax after AstraZeneca jab confers high Covid immunity, study finds

Finding is good news for lower-income countries that have not yet completed their primary vaccination campaigns

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Combining a first dose of the AstraZeneca Covid-19 vaccine with a second dose of either the Moderna or the Novavax jabs results in far higher levels of neutralising antibodies and T-cells compared with two doses of the AstraZeneca jab, a study has found.

The finding has important implications for lower-income countries that have not yet completed their primary vaccination campaigns, as it suggests you do not need access to mRNA vaccines - and therefore ultra-cold storage facilities - to trigger an extremely potent Covid-19 vaccine response.