If one's belief is correct regarding the spreading of disease, namely, that it can spread only with the permission of Allah, will it be permissible to

Answer

As long as the precaution is not in violation of the Shariah, it will be permissible. Almost all the molvis are viewing the issue without understanding and without applying their minds. No one condemns precautions. But if the 'precaution' is violently in conflict with the Shariah and is accepted at the behest of atheists, then it will be satansim and kufr.

Banning and abrogating the Fardh Jamaat and Jumuah Salaat, closing the Musaajid and adopting the host of satanic measures at the behest of the atheists are not halaal precautions. All of this is pure shaitaaniyat, hence haraam.