TEL AVIV—Some Israeli community-health officers are blaming the country’s choice to reopen schools in May possibly for helping gasoline a large new wave of coronavirus bacterial infections that has prompted authorities to shut down sections of the economic climate once once again.

In modern months, the variety of new conditions of Covid-19, the disorder triggered by the new coronavirus, has risen to all over one,500 for each day nationwide from a very low of fewer than fifty a day about two months in the past.