Symptoms of a viral infection depend on where you’re infected, but some common ones include: Flu-like symptoms: fever, head and body aches, fatigue. Upper respiratory symptoms: sore …

2023年11月10日 · COVID-19 is a respiratory condition caused by a coronavirus. Some people are infected but don’t notice any COVID-19 symptoms (doctors call that being asymptomatic). …

2024年8月26日 · Symptoms. Flu can cause mild to severe illness, and at times can lead to death. Flu symptoms usually come on suddenly. People who have flu often feel some or all of these …

2023年12月28日 · Respiratory syncytial virus (RSV) feels like a common cold to most young, healthy adults. But it’s not “just a cold.” Thousands of people — mostly adults over age 65 and …

2023年2月17日 · Symptoms of a viral infection include fever, pain, nausea, diarrhea, cough, congestion, shortness of breath, rashes, warts, and many others. The best treatment for most …

2025年1月11日 · Some symptoms are hard to distinguish among illnesses, especially with respiratory viruses. Others are unmistakable. — Norovirus is a foodborne illness that can …

2025年1月15日 · Symptoms usually develop starting at 12 to 48 hours after exposure to the virus. Along with vomiting and diarrhea, symptoms include nausea, headache and body pains. …

3 天之前 · It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the same. There are some notable differences between flu A and flu B …

2023年11月8日 · Viruses can be spread in different ways: Through droplets and particles that are breathed out by someone who has the infection. You might breathe in the droplets or particles, …

2024年6月25日 · People with COVID-19 have a wide range of symptoms ranging from mild symptoms to severe illness. Symptoms may appear 2-14 days after exposure to the virus. …