In addition to his family and friends, the medical ninja in the village would be involved. They would be the ones to accurately diagnose Boruto's condition. Shizune, for example, could come and check on him, using her vast medical knowledge. And the other young medical ninjas might learn from this case, as Boruto's illness could be something new or unusual, so they would be eager to assist and gain experience while taking care of him.
In the 'Boruto Gets Sick' fanfiction, Boruto might experience various symptoms like a high fever, weakness, and coughing. His friends and family would likely be worried about him. They would probably take care of him, bring him medicine and try to make him comfortable.
His teammates, Sasuke and Sakura, would surely be involved. Sasuke, although he may not show it as much, still cares about Naruto. He would keep an eye on Naruto's condition, and if there was any sign of danger, he would be ready to protect him. Sakura would be more hands - on with the medical care, checking his temperature, giving him medicine, and making sure he rests properly.
Alfred would probably be the first one to take care of him. He's always there for Batman.
Sango could also take care of Kagome. As a strong and kind - hearted woman, she would know how to nurse Kagome back to health. She might use her knowledge of herbs and remedies to make Kagome feel better. Plus, she would offer emotional support to Kagome during her illness.
It could be a joint effort. Zack would be there for sure, but the whole gang including Woody and London might also pitch in. London could use her resources to get the best possible care for Cody, while Woody could provide some comic relief to keep Cody's spirits up during his illness.
Seth could be the one to help her. As her brother, he would be very concerned and might use his own knowledge of Fablehaven and its secrets to try and find a cure. He could also enlist the help of some of the friendly magical creatures they've befriended, like the fairies or the satyrs.
In the fanfiction, it could be that Sailor Chibi Moon comes to take care of Sailor Moon. Since she looks up to Sailor Moon so much, she would do everything she can. She might even use her own little powers in a unique way to try and make Sailor Moon feel better, like creating a warm and cozy environment around her bed.
Padmé could also be involved. She is known for her compassion. She might use her resources to get the best medical help for Ahsoka. She could bring in the best doctors in the galaxy or some special remedies from Naboo.
Her friends could take care of her. For instance, Yuki might bring her some herbal tea that he made himself, believing it would help with her illness.
Thor could be one of the first to take care of Loki. Despite their differences, Thor still cares about his brother. He would use his strength to protect Loki from any threats while Loki is sick and might even search for rare remedies.