Phuket begins a new vaccine injection method


PHUKET: Medical staff at the indoor sports stadium in Saphan Hin yesterday (September 24th) started giving “booster” injections of the third dose by the subdermal method, with the vaccine being injected directly under the skin instead of the intramuscular method, and the vaccine was injected into the muscle as used before.

The new method was used yesterday to give a third dose of AstraZeneca “booster” injections to those who had already received two injections of the Sinovac vaccine.

Phuket is the first province in the country to use the new method after approval by the Ministry of Health.

Approval came after a study conducted by doctors at Vachira Phuket Hospital, which showed that the vaccine was just as effective in boosting immunity to SARS when injected just under the skin at just 20% of the standard AstraZeneca vaccine dose -CoV-2 proved virus.

When the results of this study were announced on September 15, Dr. Chalermpong Sukontapol, Director of Vachira Phuket Hospital, together with Dr. Supalak Laongpetch and Dr. Withita Jaeng-iam, the initiator of the research project that involved 242 volunteers aged 18-60 years who had received two doses of Sinovac vaccine.

The results showed that the immunity of the subcutaneously vaccinated people was on average slightly higher than that of the conventional vaccinations.

Those who received subcutaneous vaccination had an average immune response of 17,662.3 AU / ml and those who received conventional vaccination had an average immune response of 17,214.1 AU / m. 840 AU / ml).

The side effects of subcutaneous vaccinations are less common than with conventional injections, such as fever or headache, the researchers found.

“The subcutaneous injection causes more irritation and redness at the injected site, which is not a concern,” said Dr. Withita.

Doctors will vaccinate around 200,000 residents and those who live on the island without home registration, with the goal of completing the process by mid-October, said Dr. Withita.

“When that is done, a second group consisting of migrants and foreign residents will be vaccinated,” she added.

The time after the injection is now also shorter, said Dr. Withita yesterday.

“After vaccination, only 10-15 minutes of observation are required instead of the previous 30 minutes, since acute side effects such as low temperature, exhaustion and headaches are less likely than with the conventional method, with an equivalent increase in immunity. scientifically based, ”she said.

The subcutaneous injection will allow doctors to give about four times more vaccines than the traditional method, which will speed up preventing the delta variant of the COVID virus from spreading, added Dr. Withita added.

As of yesterday, 66,383 people in Phuket had received a third dose of booster vaccination, according to the Phuket Province Health Department (PPHO).

The PPHO also reports that 389,163 people in the province received two syringes, while 426,387 still only received one syringe.

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