Coronaviruses related to respiratory diseases in humans

Certainly, the coronavirus pandemic occurs less severely in patients without comorbidities, but more severely in immunocompromised patients, and although it is true that it began in 2019 with a high incidence in people aged 50 years or older, it is also true that nowadays it also affects children under 50 years of age, including children. The present literature review in databases such as Latindex, SciELO and Scopus, focuses mainly on the seven strains of coronavirus implicated with respiratory diseases in humans. The main results indicate that seven coronavirus strains related to respiratory diseases in humans have been reported: SARS-CoV-2, MERS-CoV, SARS-CoV, SARS-CoV, HCoV-HKU1, MERS-CoV, HCoV-OC43, HCoV-NL63, HCoV-229E, concluding that SARS-CoV and MERS-CoV viruses are the most lethal members of this family for humans, due to their virulence and the impact of their outbreaks worldwide.