Discussion
Respiratory co-infections are common and simultaneous infections with two viruses are accompanied by effects on the host and the synergism of viruses. It will affect the immune response and outcome of the treatment [2]. Common symptoms in patients with covid-19 and influenza co-infections include fever, cough, and shortness of breath; Considering the exact transmission mechanism of these two viruses, it is necessary to perform appropriate and correct tests and timely diagnosis to differentiate and proper treatment [6]. Furthermore, bacterial along with viral infection can bring about other problems [5]. Hence, appropriate diagnosis and treatment are vital for patient recovery and suitable clinical outcomes. According to the results of a systematic review study, co-infection with influenza and covid-19 may be associated with a predisposition to secondary bacterial infection, which can increase clinical outcomes [7]. In reported cases, COVID-19, influenza co-infection and TB co-infection of case 1 along with comorbidities and pregnancy represented situations entailing on-time diagnosis and appropriate management. The dose and duration of the effective treatment and monitoring of the patient’s symptoms and conditions are other factors helping clinicians in achieving an optimal clinical outcome.