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  2. Common cold - Wikipedia

    en.wikipedia.org/wiki/Common_cold

    The cough is usually mild compared to that accompanying influenza. [4] While a cough and a fever indicate a higher likelihood of influenza in adults, a great deal of similarity exists between these two conditions. [24] A number of the viruses that cause the common cold may also result in asymptomatic infections. [25] [26]

  3. Cough - Wikipedia

    en.wikipedia.org/wiki/Cough

    A cough is a sudden expulsion of air through the large breathing passages which can help clear them of fluids, irritants, foreign particles and microbes.As a protective reflex, coughing can be repetitive with the cough reflex following three phases: an inhalation, a forced exhalation against a closed glottis, and a violent release of air from the lungs following opening of the glottis, usually ...

  4. Whooping cough - Wikipedia

    en.wikipedia.org/wiki/Whooping_cough

    Whooping cough (/ ˈ h uː p ɪ ŋ / or / ˈ w uː p ɪ ŋ /), also known as pertussis or the 100-day cough, is a highly contagious, vaccine-preventable bacterial disease. [1] [10] Initial symptoms are usually similar to those of the common cold with a runny nose, fever, and mild cough, but these are followed by two or three months of severe coughing fits. [1]

  5. Croup - Wikipedia

    en.wikipedia.org/wiki/Croup

    Croup (/ k r uː p / KROOP), also known as croupy cough, is a type of respiratory infection that is usually caused by a virus. [2] The infection leads to swelling inside the trachea, which interferes with normal breathing and produces the classic symptoms of "barking/brassy" cough, inspiratory stridor and a hoarse voice. [2]

  6. Adenovirus infection - Wikipedia

    en.wikipedia.org/wiki/Adenovirus_infection

    Adenovirus infection is a contagious viral disease, caused by adenoviruses, commonly resulting in a respiratory tract infection. [1] [10] Typical symptoms range from those of a common cold, such as nasal congestion, coryza and cough, to difficulty breathing as in pneumonia. [10]

  7. Respiratory tract infection - Wikipedia

    en.wikipedia.org/wiki/Respiratory_tract_infection

    Viruses that cause respiratory infections are affected by environmental conditions like relative humidity and temperature. Temperate climate winters have lower relative humidity, which is known to increase the transmission of influenza. [29] Of the viruses that cause respiratory infections in humans, most have seasonal variation in prevalence.

  8. SARS-CoV-2 - Wikipedia

    en.wikipedia.org/wiki/SARS-CoV-2

    Virus infections start when viral particles bind to host surface cellular receptors. [158] Protein modeling experiments on the spike protein of the virus soon suggested that SARS‑CoV‑2 has sufficient affinity to the receptor angiotensin converting enzyme 2 (ACE2) on human cells to use them as a mechanism of cell entry. [159]

  9. Acute bronchitis - Wikipedia

    en.wikipedia.org/wiki/Acute_bronchitis

    The cough may persist for several weeks afterward with the total duration of symptoms usually around three weeks. [2] [1] Some have symptoms for up to six weeks. [3] In more than 90% of cases, the cause is a viral infection. [1] These viruses may be spread through the air when people cough or by direct contact. [2]