“The kids are footballers so they have high immune systems,” Jedsada said. “Everyone is in high spirits and are happy to get out. But we will have a psychiatrist to evaluate them.”

It could be at least seven days before they can be released from hospital, Jedsada told a news conference.

Family members have seen at least some of the boys from behind a glass isolation barrier, and Jedsada said doctors may let the boys walk around their beds Tuesday.

It was clear doctors were taking a cautious approach. Jedsada said they were uncertain what type of infections the boys could face “because we have never experienced this kind of issue from a deep cave.”

If medical tests show no dangers, after another two days parents will be able to enter the isolation area dressed in sterilized clothing and staying 2 meters away from the boys, said Tosthep Bunthong, Chiang Rai Public Health Chief.

The second group of four rescued on Monday are aged 12 to 14.

At least nine ambulances and a convoy of other vehicles were at the cave site Tuesday.

Heavy rains in the morning cleared during the day, a reassuring sign for rescuers who have feared monsoon rains could imperil the rescue.

Officials scotched any chance of using tech billionaire Elon Musk’s mini sub made of rocket parts to rescue the remaining boys.

Narongsak said he was grateful for Musk’s support but the equipment was impractical for the rescue mission.

Musk on Tuesday visited the cave and posted pictures and videos online. He said he left the equipment there in case rescuers could use it in the future.

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This story has been updated with correct title and first name of health ministry official.