Hi thanks for your question.
You have not mentioned any other symptom other than cold
and increased in WBC. Increased and increase in WBC means infection some where body. He has cold, but cold is usually viral and will not increase WBC to such an extent. He is taking antibiotic and the infection is not responding to antibiotics. Consult an internal medicine specialist who may evaluate your husband fully for increase in WBC count
. He needs through physical examination, complete blood count
, urine examination Blood culture
abdomen and many more investigations to determine cause of increased WBC.
Hope this answers your question.