Two of the eight boys taken from the cave in the first 48 hours of the rescue have signs of pneumonia while another has body temperature and heart rate concerns, according to health officials.
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The boys - who remain under observation in the Chiangrai Prachanukroh Hospital - are under strict quarantine conditions and some have been able to see, but not touch their parents. Fairfax Media understands the reunions happened through a window and that they were able to speak to one another.
While the two boys with lung infections are showing signs of pneumonia and another of the rescued "Wild Boars" soccer team has a decreased heart rate and low body temperature, the other five who have been pulled from the cave are said to be "fine and normal".
Dr Jesada Chokedamrongsuk, from the Ministry of Public Health and Chiangrai Prachanukroh Hospital, also said one boy had a scratch on the ankle when he came out, but none had a fever and all are able to walk around.
Officials have not released the identities of which boys have been saved and which remain in the cave, but it is understood the coach is yet to be rescued and that the first group taken out on Sunday were aged 14 to 16 and the second group, taken out on Monday, were aged 12 to 14. The coach is aged 25.
The boys began by eating medical rations but have now had "normal food", though nothing spicy, just soft boiled rice. They also asked for - and were given - a small amount of chocolate.
They will be in hospital for about a week, and have undergone a battery of tests including for hypothermia, blood tests, lung X-rays, heart rate, as well as receiving vaccines, IV fluids and vitamin B1. Eye tests have been conducted and their eye sight is normal - though the boys' eyes were shielded when they came out, and the second group are still wearing sunglasses indoors.
Four were rescued on Sunday and another four were rescued in a faster operation on Monday, after two weeks trapped in the cave complex in north-western Thailand. The boys have been kept isolated because of a fear of infection.
An operation to rescue the rest of the boys began Tuesday afternoon.
Earlier, Thongchai Lertwilairattanapong, a Ministry of Health doctor at the hospital where the first four rescued boys were being treated, said that reunions with their families had to be delayed by 24 hours because of the need to perform exhaustive health checks. After that, if all the tests were negative, then family could visit, he said.
However, at that point some of the parents told Reuters they had not been told who had been rescued and that they were not allowed to visit the hospital.
Somboon Sompiangjai, 38, the father of one of the trapped boys, said parents were told by rescuers ahead of Sunday's operation the "strongest children" would be brought out first.
"We have not been told which child has been brought out ... We can't visit our boys in hospital because they need to be monitored for 48 hours," Somboon told Reuters on Monday."I'm hoping for good news."
