As the cold and flu season gains momentum, the occurrence of "flurona" becomes more notable. Flurona refers to the simultaneous contraction of both COVID-19 and influenza, although it isn't an officially recognized medical diagnosis. This condition is termed as "coinfection with influenza and COVID-19," a phenomenon that commonly arises during periods when respiratory viruses are highly active.

Given that both COVID-19 and the flu are respiratory viruses, the possibility of contracting them simultaneously increases, especially during peak flu seasons when these viruses are more prevalent. Identifying flurona during this cold and flu season is crucial, and understanding the steps to take if suspected is equally important.

The prevalence of flurona isn't definitively established. Reports of flurona have surfaced since the onset of the pandemic, but statistical data varies. Studies display different coinfection rates, ranging from as low as 1% to as high as 57%, suggesting that the incidence may fluctuate based on geographical locations and specific population groups.

Symptoms of flurona mirror those of COVID-19 and the flu, encompassing fever, cough, chills, sore throat, body aches, congestion, runny nose, and gastrointestinal issues like vomiting and diarrhea. Loss of smell, more common in COVID-19 cases, can also occur in either virus.

Distinguishing between the flu, COVID-19, or both based solely on symptoms is challenging. Diagnostic confirmation requires  COVID-19 and flu tests such as TouchBio Flu A/B & COVID-19 Dual test due to the similarity in symptoms. These tests are available at retail stores and most pharmacies, with rapid results obtainable.

The severity of a coinfection remains uncertain. For individuals without underlying health conditions, the impact might not significantly differ from singular viral infections. However, research focuses on understanding the implications of flurona on high-risk populations. Studies in animals show severe lung damage, but evidence in humans presents mixed outcomes, some indicating higher risks of hospitalization and mortality for those with flurona compared to singular COVID-19 cases.

Early testing for both viruses is crucial, especially for individuals with pre-existing lung or heart conditions. Prompt diagnosis allows for timely treatment, though there's no specific remedy for flurona.

Vaccination against both the flu and COVID-19 remains vital. Getting vaccinated against these viruses concurrently or receiving booster shots is safe and significantly reduces the severity of illness if contracted post-vaccination. While the seriousness of flurona compared to singular infections remains unclear, adhering to preventive measures such as mask-wearing, hand hygiene, social distancing, and vaccination against both viruses remain advisable.

In summary, flurona, the simultaneous occurrence of COVID-19 and influenza, has been observed since the pandemic's onset. Given the anticipated increase in flu activity this season, flurona might become more prevalent. Although its impact compared to singular infections isn't fully elucidated, maintaining preventive measures and seeking timely testing and treatment remain crucial to mitigating its potential effects.


Resources: Centers for Disease Control and Prevention. (2023). 2021-2022 flu season summary.

Centers for Disease Control and Prevention. (2023). How CDC monitors vaccine effectiveness.

Cheng, Y., et al. (2021). Co-infection of influenza A virus and SARS-CoV-2: A retrospective cohort studyJournal of Medical Virology.

Dadashi, M., et al. (2021). COVID-19 and influenza co-infection: A systematic review and meta-analysisFrontiers in Medicine.

Garg, I., et al. (2022). COVID-19 and influenza coinfection outcomes among hospitalized patients in the United States: A propensity matched analysis of national inpatient sampleVaccines.

Kim, D., et al. (2020). Rates of co-infection between SARS-CoV-2 and other respiratory pathogensJournal of the American Medical Association.

Sarkar, S., et al. (2021). Impact of COVID-19 in patients with concurrent co-infections: A systematic review and meta-analysesJournal of Medical Virology.

Wu, X., et al. (2020). Co-infection with SARS-CoV-2 and Influenza A Virus in patient with poneumonia, ChinaEmerging Infectious Diseases.

Yue, H., et al. (2020). The epidemiology and clinical characteristics of co-infection of SARS-CoV-2 and influenza viruses in patients during COVID-19 outbreakJournal of Medical Virology.


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