The vaccine developed by Moderna has characteristics similar to that developed by Pfizer-BioNTech.
The World Health Organization ( WHO ) granted this Friday its emergency homologation to Moderna's 
COVID-19 
vaccine, the fifth to receive such approval from the UN health agency.
This 
vaccine, based on messenger RNA technology, "is added to the growing list of 
vaccines validated by the WHO for emergency use," the UN agency said in a statement.
Until now, the WHO had approved the 
Pfizer-
BioNTech vaccine, the two 
AstraZeneca sera manufactured in India and South Korea, and the 
Johnson & 
Johnson vaccine, called Janssen. A decision is expected to be made shortly for the two Chinese 
vaccines, Sinopharm and Sinovac.
This procedure helps countries that do not have the means to determine whether a drug is effective and safe can access it more quickly; And it will also allow the 
Covax system - launched by WHO with other partners to distribute 
covid-19 
vaccines in disadvantaged countries - to contemplate getting more 
vaccines.
The 
vaccine developed by Moderna, a pioneering startup in anticovid 
vaccines, has characteristics similar to that developed by 
Pfizer-
BioNTech, with 94.1% efficacy. This American 
vaccine has been licensed in the European Union, the United States, the United Kingdom, Israel and Singapore, among other countries.
On January 21, it was examined by the Strategic Consultative Group of Experts (SAGE) on vaccination, in charge of issuing recommendations on 
vaccines.
The group recommended that the 
vaccine be used in all age groups starting at 18 years of age. WHO experts also recommend that Moderna's 
vaccine be administered in two doses with an interval of 28 days, although they noted that the second injection can be "postponed 42 days" (six weeks) in exceptional circumstances, such as a serious crisis. sanitary or dose shortage.
However, they do not recommend cutting the dose in half.