The human coronavirus discovered in 2003, SARS-CoV, which causes severe acute respiratory syndrome (SARS), has a unique pathogenesis as it causes both upper and lower respiratory tract infections. Six species of human coronaviruses are known, one of which is split into two different strains, making a total of seven strains of human coronavirus.
Virusi vya korona vya binadamu vilivyogunduliwa mwaka wa 2003, ambavyo husababisha ugonjwa kali wa matatizo ya kupumua (SARS), vina pathogenisis ya kipekee kwa sababu huambukiza sehemu ya juu na chini ya kupumua. Aina sita za virusi vya korona vya mwanadamu vinajulikana, na aina moja imegawanywa katika aina mbili tofauti, na kutengeneza aina sita za virusi vya korona vya mwanadamu kwa pamoja.