September 2020 var der 321 vaccinekandidater under udvikling, en stigning på 2,5 gange siden april. Ingen kandidater har imidlertid gennemført [[Klinisk undersøgelse#Faserne|kliniske forsøg]] der godtgør sikkerhed og effektivitet, virkning.<ref name="thanh2">{{cite journal | last1=Le | first1=Tung Thanh | last2=Cramer | first2=Jakob P. | last3=Chen | first3=Robert | last4=Mayhew | first4=Stephen | title=Evolution of the COVID-19 vaccine development landscape | journal=Nature Reviews Drug Discovery |date=2020-09-04 | issn=1474-1776 | doi=10.1038/d41573-020-00151-8 | pmid=32887942 | url=https://www.nature.com/articles/d41573-020-00151-8}}</ref> I midten af september indgik 42 vaccinekandidater i klinisk forskning: nemlig 33 i fase I-II-forsøg og 9 i fase II-III-forsøg.<ref name="thanh2" /><ref name="london">{{cite web|url=https://vac-lshtm.shinyapps.io/ncov_vaccine_landscape/|title=COVID-19 vaccine development pipeline (Refresh URL to update)|publisher=Vaccine Centre, London School of Hygiene and Tropical Medicine|date=2020-09-14|access-date=2020-09-17}}</ref><ref name="milken">{{cite web|title=COVID-19 vaccine tracker (Choose vaccines tab, apply filters to view select data)|url=https://airtable.com/shrSAi6t5WFwqo3GM/tblEzPQS5fnc0FHYR/viwDBH7b6FjmIBX5x?blocks=hide|publisher=Milken Institute|access-date=2020-09-16|date=2020-09-17|lay-url=https://milkeninstitute.org/covid-19-tracker}}</ref><ref name="who-tracker">{{Cite web|title=Draft landscape of COVID 19 candidate vaccines|url=https://www.who.int/who-documents-detail/draft-landscape-of-covid-19-candidate-vaccines|publisher=World Health Organization|date=2020-09-17|access-date=2020-09-17}}</ref>
Samfund Sygdomme Lægevidenskab Sundhed Teknologi Sundhedsvæsen Sikkerhed Naturvidenskab Vira