Dr. Wiput Phoolcharoen, a public health expert at Chulalongkorn University in Bangkok who is researching an outbreak of the coronavirus in Pattani in southern Thailand, noted that more than 90 percent of those who tested positive there were asymptomatic, much higher than normal.
“What we are studying now is the immune system,” he said.
Dr. Wiput said Thais and other people from this part of Southeast Asia were more susceptible to certain serious cases of dengue fever, a mosquito-borne virus, than those from other continents.
“If our immune systems against dengue are so bad, why can’t our immune system against Covid be better?” he asked.
Here is more from the NYT, good to see coverage of this. Finally we are getting somewhere.