]> 2026-07-31T01:47:01+00:00 WBR0854 0 en Blood culture Incorrect Influenza virus best diagnosed with viral antigen detection using nasopharyngeal swab Sputum culture Incorrect The patient has a dry cough, beside the influenza virus best diagnosed with viral antigen detection using nasopharyngeal swab Nasopharyngeal Swab Correct Influenza virus best diagnosed with viral antigen detection using nasopharyngeal swab Urine culture Incorrect Urine culture is not useful confirming the influenza diagnosis Family history Incorrect People with flu can spread it to others up to about 6 feet away. Most experts think that flu viruses are spread mainly by droplets made when people with flu cough, sneeze or talk, so it can be obtained from any one not only from the family members. It is very difficult to distinguish the flu from other viral or bacterial causes of respiratory illnesses on the basis of symptoms alone. Influenza viral infection usually present with fever, headache, cough, sore throat, arthralgia, and myalgia. The best diagnostic test for influenza is viral antigen detection testing of the nasopharyngeal swab.<br/> '''Educational Objective:''' The best diagnostic test for influenza is viral antigen detection testing of the nasopharyngeal swab.<br/> '''References:''' None. Primary Care Office A 26 year- old male comes to your office in January complaining of dry cough, headache, sore throat, and feeling of tiredness started yesterday. He mentions a pain all over his body. On examination, the patient is feverish with temperature 39 C (102 F), heart rate 100/min, blood pressure 140/80 mmHg, and respiratory rate of 22/min. Which of the following will confirm your diagnosis? C Infectious Disease 2020-10-28T01:53:38Z 2459150.578912 WBR0854