His immune system will overcome the virus by itself and he will get better. There is little you can do to strengthen his immune system as such,but you could use a probiotic such as Probiflora Junior one tablet daily for 10 days to stimulate his immune system.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.