A second batch of Pfizer Covid-19 vaccines for healthcare professionals in 77 provinces is expected to arrive on Saturday, according to the Department of Disease Control (DDC).
Opas Karnkawinpong of the DDC said 257,200 doses of the US-made vaccine should arrive in the provinces no later than tomorrow.
He said a total of 700,000 doses had been distributed with the first batch of 442,800 doses delivered last Wednesday and Thursday.
Dr Opas said the delivery was divided into two batches one week apart.
The Pfizer vaccines, donated by the US government, will be given as boosters to medical personnel and frontline workers who have already received two shots of Sinovac.
The US government last month donated a total of 1,503,450 doses of Pfizer vaccine to Thailand to help the country's fight against Covid-19.
Dr Opas said the department had not hoarded the vaccine for VIPs.
