However, this is a real challenge due to the significant lead time (18 months on average) needed to develop a vaccine and the dynamic variations of coronaviruses.
Hata hivyo, kuna changamoto la kuondokana na ugumu huu kwa sababu ya muda mrefu unaohitajika (kwa wastani miezi 18) kuunda chanjo na mambo mbalimbali yanayobadilika ya CoV.