Experts say all vaccines that are currently in use in Sri Lanka, Sinopharm, Pfizer, Moderna and Sputnik V, provide expected immunity against COVID-19, two weeks after an individual is fully vaccinated with two jabs.
Director of the Department of Allergy, Immunology and Cell Biology Unit of the Department of Immunology Molecular and Molecular Medicine of the University of Sri Jayewardenepura Dr. Chandima Jeewandara said full vaccination helps prevent serious bout of COVID-19 and hospitalization.
Dr. Jeewandara said the World Health Organization is also of the same stance pertaining to currently approved vaccines.
Speaking during a media briefing in Colombo today, he said they are in process of conducting immunogenicity studies and that they have not received any contradictory results based on the type of vaccines.
Dr. Chandima Jeewandara noted however there are certain technical issues when comparing the AstraZeneca and Sinopharm vaccine doses.
He said since there are individuals who have completed six months after receiving the AstraZeneca jabs, they have to make comparisons with samples of persons who had received the Sinopharm doses, three months ago.
Dr. Chandima Jeewandara they are continuing to test samples to obtain data about antibodies and the prevalence of t cells and b cells in individuals who have received jabs.
Dr. Jeewandara added that they are hoping to provide a complete report on the matter to the Ministry of Health.
Meanwhile, Dr. Chandima Jeewandara is of the view that a third jab or a booster shot is not required for all individuals.
He said only those with weak immunity and based on future assessments, booster shots must be administered.
Dr. Jeewandara also noted that the decision must be taken after analyzing future data.
Meanwhile, commenting on vaccinating children against COVID-19, Dr. Chandima Jeewandara said he is of the view that all children should not be vaccinated.
He said it is a complicated process and decisions must be made only after deliberating it with all stakeholders.
Dr. Jeewandara said even European countries are using separate criterias but vaccine doses are administered to only a selected group of children.
He said they have made known their stance to authorities already.