Stats released by the Ministry of Health show that 1.21 million new infections have been recorded from November, 2016 to December 31, 2017.
This is a significant increase from 1.18 million in October.
The total number of new infections is the highest since January 2015.
There were 2.1 new infections recorded in October and 1.6 in September, while there were 0.9 new infections in August.
The Ministry of Finance says that the number of people living with HIV infection has dropped by more than 1.3 million, from 3.1.
In the past year, there has been a fall in the rate of new HIV infection in Thailand from 24.1% to 22.4%.
The new infections were reported from six provinces and the main city of Bangkok.
There was a decrease in the number recorded in the south of the country.
This is the fourth straight month that the rate has been declining, which is a sign of progress.
Last month, there were 5,948 new infections, which was an increase of 5% compared to the same month in 2017.
The rate of newly infected people is now at 8.1 per 100,000 people.
The latest numbers were released on Friday and will be published in the coming weeks.
Thailand is a very low risk country, but there are still some people living in the country with the virus.
People can get HIV infection from a variety of sources, including sexual contact, needle sharing and other unsafe sexual behaviour.
More:Thailand’s new HIV vaccine can help control the virusThailand was ranked the second-safest country in the world, according to the World Health Organization (WHO).
The country has a population of about 15 million, with more than 70% living in rural areas.