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  2. The Top Symptoms of RSV To Be Aware of in Older Adults ...

    www.aol.com/top-symptoms-rsv-aware-older...

    “RSV enters the body through the mouth, nose or eyes, and spreads easily through the air,” she says, explaining the reasoning why these two actions go a long way in protecting against the virus.

  3. Viral pneumonia - Wikipedia

    en.wikipedia.org/wiki/Viral_pneumonia

    Viruses must invade cells in order to reproduce. Typically, a virus will reach the lungs by traveling in droplets through the mouth and nose with inhalation. There, the virus invades the cells lining the airways and the alveoli. This invasion often leads to cell death either through direct killing by the virus or by self-destruction through ...

  4. Symptoms of COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Symptoms_of_COVID-19

    Of people who show symptoms, 81% develop only mild to moderate symptoms (up to mild pneumonia), while 14% develop severe symptoms (dyspnea, hypoxia, or more than 50% lung involvement on imaging) that require hospitalization, and 5% of patients develop critical symptoms (respiratory failure, septic shock, or multiorgan dysfunction) requiring ICU ...

  5. Pneumonia - Wikipedia

    en.wikipedia.org/wiki/Pneumonia

    When the immune system responds to the infection, even more lung damage may occur. [44] Primarily white blood cells, mainly mononuclear cells, generate the inflammation. [60] As well as damaging the lungs, many viruses simultaneously affect other organs and thus disrupt other body functions. Viruses also make the body more susceptible to ...

  6. Do you have the flu? Watch out for these 2025 symptoms ... - AOL

    www.aol.com/finance/flu-watch-2025-symptoms-mild...

    Ah, January. The season of new beginnings, icy winds, and respiratory infections. With a “quad-demic” of diseases circulating the country—flu, COVID, respiratory syncytial virus (RSV), and ...

  7. Common cold symptoms vs. flu or COVID: What to look for

    www.aol.com/common-cold-symptoms-vs-flu...

    Slight body aches. Mild headache. Low-grade fever. ... The CDC notes that people with the flu can experience some or all of the following symptoms, and that the impact of the virus can range from ...

  8. Respiratory syncytial virus - Wikipedia

    en.wikipedia.org/wiki/Respiratory_syncytial_virus

    Respiratory syncytial virus (RSV), [a] also called human respiratory syncytial virus (hRSV) and human orthopneumovirus, is a virus that causes infections of the respiratory tract. It is a negative-sense, single-stranded RNA virus. [2] Its name is derived from the large cells known as syncytia that form when infected cells fuse. [2] [3]

  9. Influenza - Wikipedia

    en.wikipedia.org/wiki/Influenza

    Influenza, commonly known as the flu, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These symptoms begin one to four (typically two) days after exposure to the virus and last for about two to eight days.

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