Flu, RSV and COVID-19 have many symptoms that are similar, but public health experts tell ABC News how you may be able to tell the difference between the three. ABC News. Video. Live. Meanwhile, the CDC has issued an alert to clinicians about the need to increase immunizations for influenza, Covid-19, and respiratory syncytial virus, or RSV. The public health agency reported On average, flu symptoms tend to develop two days after exposure to the virus, whereas RSV symptoms tend to take around four to six days to appear, and Covid's typical incubation is three to Health officials say with the flu, you're more likely going to have a fever. With RSV, you may be wheezing, and COVID-19 symptoms lean more towards difficulty breathing, fatigue, sore throat Symptoms of influenza (flu), respiratory syncytial (sin-SISH-uhl) virus (RSV), and COVID-19 are similar and may include fever, cough, and shortness of breath. Because the symptoms are similar, it can be difficult to distinguish between illnesses caused by respiratory viruses. To diagnose a potential case, healthcare professionals may use a The spread of the flu, COVID, and RSV has driven respiratory-illness activity to high levels in New York City and 17 states — and vaccination rates for the three viruses remain far too low .

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