Discussion and conclusion
To the best of our knowledge, we report the first observation of measles
and influenza co-infection in the world. Recently, co-infections of
SARS-CoV-2 and measles have been reported in symptomatic measles
patients. The mixed infection are clinically important as the patients
referring to the hospital with measles may be silent carriers of other
respiratory viruses such as SARS-CoV-2 and influenza virus. There is a
report from Brazil in 2021 detecting a co-infection of measles and
SARS-CoV-2 [12] , but co-infection of measles and influenza virus
case has not been reported elsewhere in the world. No studies have
clearly investigated the impact of this simultaneous infection on the
severity and transmissibility of these diseases.
In conclusion, all respiratory samples of patients suspected of measles
infection should be screened for influenza virus and SARS-CoV-2 during
the COVID-19 pandemic and influenza epidemic. These findings are
critical for preventing and breaking the chain of infection in pandemic
and epidemic circumstances that can provide new perspectives and
insights regarding treatment strategies in patients with co-infections
compared to those with single infection.