America was begun a Christian nation. The first school text (other than the Bible) was the New England Primer which was full of Scripture. Not one of the Founders (participated in writing our founding documents) was atheist, agnostic, or deist. Jefferson and Franklin, icons for anti-Christian activists, advocated Bible in schools and prayer by government leaders.
America is not Christian in the same sense that Iraq is Muslim or India is Hindu or China is Atheist.
America is Christian because Christianity is the religion that shaped America and made her what she is today, producing many of the cherished traditions still enjoyed today, including:
A republican rather than a theocratic form of government
The institutional separation of church and state (today’s enforced institutional secularization of church and state is changing that)
Religious toleration and the rights of conscience
A distinction between theology and behavior, allowing the incorporation into public policy of religious principles promoting good behavior but not enforcing theological tenets and
A free-market approach to religion, thus ensuring religious diversity and security for the rights of religious conscience (Atheism has been changing this.)
Now about the Covid-19 problem. A simple, logical, and traditional solution is to quarantine the person with the virus and let the rest of society live normal lives. The virus will gradually disappear as viruses have in the past. The fear has been generated by the Left (liberals) working in cooperation with the media (liberal) in their effort to destroy Trump and America.