my child age 2 year 10 month he suffers every 15 day he started fever. I also check blood and urine test but there no specific disease I am helpless what I do

A. That's because of less immunity, n poor hygiene, strong immune system is one of the best ways to fight the infection. You should give immunity-boosting foods to your kid's diet. A balanced and healthy diet, roper hygiene will help to avoid.