Your hair fall
might be due to a condition known as telogen effluvium
. It occurs due to stress, surgery, medicines, pregnancy
, nutritional deficiency
, chronic illness(in your case typhoid) etc. Take good high protein nutritious diet and try to remain stress free. Be reassured whatever hair fall you get in telogen effluvium is basically reversible so your hair will regrow in a period of time. However if you really want some active management try taking an oral supplement of biotin like keraglo forte and apply minoxidil
2% locally in scalp twice in a day at least for 3 to 4 months. Take care.