hiiii sir/madam, my son age is 4years8 months.he suffering with cold and caugh twice in a month.he is very thin, please suggest the foods to improve his health,which type of foods to improve immunity power, please suggest. note:he was born 9 months 4 days time only,is it any affect on his immunity power we don't no, please suggest

A. for cold so. Cold and cough is due to seasonal change and is of viral and is common . Safest to give indirect steam inhalation for nasal block and also protect baby with wollens clothes . Can put nasivion / saline drops . Take flu vaccine yearly for protection from flu after six mnths of age . Nebulization can be done by doctor advise . See a doctor if fever or discomfort .