JERUSALEM — Israel on Thursday said it was extending coronavirus vaccinations to adults age 35 and older, an expansion of its world-leading drive to vanquish COVID-19.

Health Ministry Director General Hezi Levy said shots would be available to the new age group starting Friday.

The change reflects Israel’s aggressive drive to inoculate its entire population by the spring and the country is on track to do so. More than a quarter of Israel’s 9.3 million people have been vaccinated so far.

But Israel also is home to one of the developing world’s highest rate of infections, driven by ultra-Orthodox towns that are flouting safety rules and clashing with police trying to enforce them. Some 8,000 new cases are detected each day.

The country is in its third lockdown to contain the virus’ spread. This week it tightened the closures by shuttering its international airport to nearly all flights.