In the 1940s, two other animal-derived coronaviruses, murine hepatitis virus (HMV) and transmissible gastroenteritis virus (TGEV), were isolated. Human coronaviruses were discovered in the 1960s.
Katika miaka ya 1940, virusi viwili zaidi vya korona vya mnyama, vilitengwa, virusi vya homa ya manjano vya panya (MHV), na virusi vya kuambukiza vya uvimbe wa tumbo (TGEV). Virusi vya korona vya wanadamau viligunduliwa miaka ya 1960.