All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
It is permissible for you to work in Corona Test Stations, while avoiding examining women if that is possible.
If it is not possible, then there is no blame on you for that, taking into account the etiquette of Sharee’ah in regard to a man dealing with non-Mahram women.
Allah knows best.