Doctor Yong reveals results of study of Covid-19 infection among children 5-6 years old before vaccination found more than expected More than half of these infections are asymptomatic.
Today (9 May 65) Prof. Dr. Yong Phu Worawan, the head of the center specializes in virology. Clinic, Department of Pediatrics Faculty of Medicine Chulalongkorn University Post a message on his personal Facebook page “Yong Poovorawan” on the topic of COVID-19 vaccine, protein subunit, stating:
“Covid 19 infection in children Before getting vaccinated (5-6 years old) more than we thought Yong Phu Worawan 9 May 2022
Infections are both symptomatic and asymptomatic. Population Infection Survey In the United States, the anti-nucleocapsid of the virus has been found to have infected more than half of the population.
for Thailand Such examinations cannot be performed. Countries that gave the deadly vaccine The resulting immunity is immune to both the virus. not only Only the sprite will also detect the anti-nuclecapsid, therefore it is not possible to differentiate from this detected. caused by infection or caused by inactivated vaccines
so the center where I study I want to know how many infections there have been Therefore, it can only be done in children. especially in children who have never been vaccinated The survey therefore used the population of children aged 5-6 years before the scheduled vaccination in Thailand. In order to know the rate of infection that is how much
From the study, normal children in the center’s program who tracked immunity to the pertussis vaccine, of which there were symptomatic infections; And asymptomatic, it can be seen that the overview of infection among children 5-6 years old During the Delta outbreak, approximately 8 percent of 5-6 year olds were already infected. Up to 17%, more than half of the infections were asymptomatic. Blood tests showed signs of infection, anti-nucleocapsid was detected. These children have never been vaccinated before. As shown in Figure 1.
when looking at another population Volunteer to vaccinate in various groups in the study of vaccine immunity in children. This group of children has no history. or have had symptoms of covid 19 infection before, but when coming to the blood test before vaccination will detect the infection already by detecting immunity anti-nucleocapsid and immunity to sprite proteins Asymptomatic infection is present. As shown in Figure 2, up to 8% of asymptomatic infections were detected.
Show that in the past period in young children already infected There has always been a tendency to increase. and is an asymptomatic infection Children will be able to build immunity.
in older children and adults The Thai population is likely to have already been infected in large numbers. It is an infection without symptoms. or have few symptoms The body will build up immunity. is another force to help create landscape It is a natural vaccine that occurs and in the future those who have been infected even if infected The severity of the disease is reduced.
The infection has been investigated. It is especially useful to be used in planning for the control of covid 19 by using knowledge. center where i work There are projects to be implemented in a wide area. But it is difficult to do with blood tests in adults. Because our house has a large number of lethal vaccinations. A history of illness, exposure, vaccination history and blood tests are required.
picture from Yong Poovorawan / AFP / Archyde.com