Clinical Research Center Faculty of Medicine Siriraj Hospital Report of the latest research as of 28 Oct. 64 to the injection trial. Covid-19 vaccine Stimulate the needle 3 by comparing “Injected into the skin layer” and injected into the muscle (Currently injected), which the results showed that people who received 2 injections of Sinovac vaccine were well vaccinated with the 3rd dose with the vaccine. “AstraZeneca” and “Pfizer” both intramuscular injection and into the skin vaccination part “AstraZeneca” After 2 doses, the 3rd needle should be stimulated with vaccination. “Pfizer” Which has good results, either intramuscularly or in the skin as follows:
1.The group received 2 injections of “Sinovacac” vaccine.
- injecting with 3 needles “Pfizer” Into the skin layer 0.05cc level of immunity IgG 3,209 BAU/mL which is close to intramuscular injection in the size of half dose (0.15cc), which is 3,981 BAU / mL but lower than the average full-dose (0.3cc) intramuscular injection. 5.152 BAU / mL
- injecting with 3 needles “AstraZeneca” Into the skin, 0.1cc gives average IgG levels. 2.810 BAU / mL which is higher than intramuscular injection which has an average level 1.358 BAU / mL about 2 times
2. Injecting group “AstraZeneca” complete 2 injections
- Vaccinate 3rd needle booster “Pfizer” Into the skin layer 0.05cc provides a high level of immunity. 1.490 BAU / mL Approximately half-dose intramuscular injection (0.15cc) 1.962 BAU / mL but lower than the average full-dose (0.3cc) intramuscular injection. 2.377 BAU / mL
- inject 3 needles “Pfizer” whether it is intramuscular or in the skin Provides a higher level of immunity after 2 injections of “AstraZeneca” (278 BAU / mL) 5-8 times
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