LONDON — A leading scientist behind the AstraZeneca COVID-19 vaccine says booster shots may be unnecessary for many people.

Oxford University Professor Sarah Gilbert told The Telegraph newspaper on Friday that immunity from the vaccine was holding up well — even against the delta variant.

While the elderly and those who are immune-compromised may need boosters, the standard two-dose regimen should protect most people, she said.

Gilbert said the world’s priority should be to get more vaccines to countries that have received limited supplies.

The comments come as the Joint Committee on Vaccination and Immunization, a panel of experts that advises the British government, is expected to make recommendations in the coming days on the scale of any booster program.