Under the Solidarity Trial of the World Health Organisation. Vaccine beneficiaries will be listed from 10 barangays with the highest number of cases of COVID-19.

Secretary Fortunato de la Peña said that the guidelines for trials were approved by Resolution No. 68 of the Inter-Agency Task Force for the Management of Emerging Infectious Diseases (IATF) issued on 3 September.

"Based on attack rates per 1000 population per barangay, vaccine recipients under the WHO Solidarity Trial will be recruited from the top 5-10 barangays reporting high COVID-19 cases," de la Peña explained.

According to Remulla, "disease spreaders" or those people between the ages of 21 and 45 will be the primary targets of the trials. Participation in the trials shall be on a voluntary basis.

"We have been assured by the developers that it is not scientifically harmful vaccine. Efficacy is more of what they are targeting, whether or not there will be a difference between people who will get placebo and people who will get the vaccine if there is a difference in the rate of infection, "he added.

It will take a month and a half to see the efficacy of the vaccines, according to Remulla, once the vaccines are administered.

Remulla stated that the clinical trials of the COVID-19 vaccine were conducted with two pharmaceutical giants from the United States and the United Kingdom.