In December 2019, a novel coronavirus, known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), was identified as the cause of an outbreak of acute respiratory illness in Wuhan, China. Since then, there has been a rapid spread of the virus, leading to a global pandemic of coronavirus disease 2019 (COVID-19).<unk> , commonly known as flu, is an infectious disease of birds and mammals caused by  RNA viruses of the biological family Orthomyxoviridae (the<unk>  viruses). Coronavirus disease 2019 (COVID-19) and<unk>  share many characteristics, common symptoms of the co-infection are fever, sore throat, dyspnea, myalgia, cough, headache, fatigue and malaise.
COVID-19 and influenza co-infection
COVID-19-associated heart failure
COVID-19-associated respiratory failure
COVID-19-associated arrhythmia and conduction system disease
COVID-19-associated cytokine storm
COVID-19 associated pediatric complications
COVID-19-associated pulmonary embolism
Middle East respiratory syndrome coronavirus infection