Among the 79 candidate vaccines in active development (confirmed at the beginning of April 2020), 74 were not yet in the evaluation phase on humans (still in “preclinical” research).
Kati ya chanjo 79 zilizoteuliwa zinazofanyiwa maendeleo (zilizothibitishwa mwanzo wa mwezi wa Aprili), chanjo 79 hazikuwa zimetathmniwa kwa mwanadamu (bado katika utafiti &quot;kabla ya upimaji wa kliniki&quot;).