The coronavirus in SARS or the coronavirus in MERS are in the same family of virus with the new (COVID-19) coronavirus.
Source, in full
Yuen Kwok-yung (2020) cited in "China coronavirus: Hong Kong professor Yuen Kwok-yung says effectiveness of drugs could be judged within weeks, with tests due to start in city" on South China Morning Post, 29 January 2020.