Tuberculosis infection protects mice against COVID-19

To study if prior Mtb infection affects the response to CoV2 infection, K18-hACE2 (ACE2) and C57BL/6 (B6) mice were infected with Mtb, and post thirty days, were exposed to CoV2.
To study if prior Mtb infection affects the response to CoV2 infection, K18-hACE2 (ACE2) and C57BL/6 (B6) mice were infected with Mtb, and post thirty days, were exposed to CoV2.