Memory T cells are a subgroup of T lymphocytes. They are able to quickly react and protect the body in case of a repeated infection with the same pathogen.
MERS stands for the Middle East Respiratory Syndrome and refers to an infection of the airways that is caused by the novel MERS coronavirus (MERS-CoV).
Monkeypox is a rare viral disease that so far occurs mainly in Africa. The virus is related to the human smallpox virus, but is significantly less dangerous.