VaccineCOVID “Mo Yong” cleared, selected a medium-line vaccine, focused on safety, with confirmed experimental results. Although not completely complete, but must be used in a crisis emergency.
Prof. Yongphu Worawan, Head of the Center of Specialization in Clinical Virology Faculty of Medicine Chulalongkorn University Reveal a selection COVID vaccine For injection to infected people in Thailand that From the epidemic ofCOVID-19 That happened around the world This creates a huge need for vaccines. While manufacturers are not able to produce the COVID vaccine. To meet all needs Current conditions make the vaccine market Belong to seller With more choices than buyers
In addition, the COVID-19 virus It’s new to everyone. Make research development And produce a vaccine against COVID-19 It’s new as well. Therefore must admit that Some steps may be required in the experiment. In order to be able to be used faster With only one year of development
Professor Yong gave an example that The normal stages of vaccine development It starts with use in laboratory animals ranging from rats to larger animals such as monkeys when found to be safe in laboratory animals. Therefore reaching the process of requesting permission for human trials This requires at least three more steps: testing that it is safe in humans. When found to be safe Will go to the second step, which is the effect of immune stimulation And followed by step 3 to study the effectiveness of the vaccine
“In the past, general If it is normal Human trials Need to take time to follow up Side effects continued for a year or 2, then came to the conclusion of the trial. But in the time of the plague now Considered an emergency Making it impossible to wait for the completion of all stages of research It was important to consider choosing the safest option at that time. “
Therefore, the vaccines that are currently developed and used This is a phase 3 trial and monitoring symptoms for only 2-3 months must be used first to resolve the COVID crisis. But the results of the study are not yet over. Because there will be development Follow up the results until the completion of every step. Therefore it will be considered the end of the trial
In addition, the vaccines that are currently available There are still many kinds Each of which is different And have different side effects, divided into 3 types:
Type 1 mRNA Which is used a lot in western countries By using the virus genetic code as a conductor Then injected into the body The makers of these vaccines are Pfizer and Moderna, which are considered new. Use high technology And has never been used in humans before
Type 2 is the Viral vector vaccine. The type that Thailand will import is AstraZeneca Co., Ltd., Russia’s Sputnik V and Chinese companies are not contacted by the Thai company. Such as the Ebola vaccine And also of Johnson & Johnson It is in the third phase of experimental research, which has not been approved by the government.
Type 3 is a lethal vaccine that has been in use for over 70 years. For example, polio vaccine, rabies, hepatitis A, but multiple vaccinations must be given. It’s a veteran vaccine. But the study of side effects is easier than the new type. And if it is to be produced, the incubation chamber must be built before it dies. Which must be a high level biosafety room Therefore unable to reduce costs cheaply
For Thailand, choose the middle line of AstraZeneca Co., Ltd. that does not require pathogens and is cheap and has information on human injection. Thus ensuring a certain level of safety And is considered the best choice at the moment
As for questions, issues, side effects Or that adverse reaction Must first clearly separate that Side symptoms With different adverse reactions The side effects are symptoms caused by vaccine use. But unpleasant symptoms May be caused by vaccine use Or caused by not using the vaccine Which requires proof
While the case of concern After many countries Fatal reports have been found after vaccination, for example in Norway, the new vaccine was once injected. Will cause adverse reactions And possible side effects But the cause of death has to be proven beforehand whether the cause is from vaccine use or not. The death of doctors in Portugal were not involved in the vaccine.
When asked about the vaccination that Why choose the elderly Person with underlying disease Before labor, Prof. Yong explained that choosing the risk group before those over the age of 60, those with congenital disease Because we want to reduce hospitalization Nurses reduce waste of resources And reduce the loss of life
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