welcome to hcm
thanks for the query
should be subsided by this time. he should go for sputum culture
and sensitivity test
a sputum culture may be done in order to identify the bacteria, virus, or fungus responsible for the illness and to determine the most effective antibiotic for treatment. A sputum sample is taken, and cultures are grown in the lab.it will help to find the organism as well as exact drug for it
is he diabetic?
he should do a fasting blood sugar level test.also TC,DC,ESR
you have not mentioned the antibiotics he is taking now.course should be 7 to 10 days.
all these tests should be done under the doctors guidance
hope this information will be helpful to you