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The common cold or the cold is a viral infectious disease of the upper respiratory tract that primarily affects the respiratory mucosa of the nose, throat, sinuses, and larynx. [6] [8] Signs and symptoms may appear in as little as two days after exposure to the virus. [6] These may include coughing, sore throat, runny nose, sneezing, headache ...
Rhinovirus is the most common viral infectious agent in humans and is the predominant cause of the common cold. The three species of rhinovirus (A, B, and C) include at least 165 recognized types that differ according to their surface antigens or genetics. They are among the smallest viruses, with diameters of about 30 nanometers.
Incubation period (also known as the latent period or latency period) is the time elapsed between exposure to a pathogenic organism, a chemical, or radiation, and when symptoms and signs are first apparent. [1] In a typical infectious disease, the incubation period signifies the period taken by the multiplying organism to reach a threshold ...
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] Other general symptoms include fever, fatigue, muscle aches ...
The incubation period is 5–10 days, with a range of 1 day to weeks following antibiotic treatment for antibiotic associated diarrhea. Additionally, carriage of C. difficile with high levels of toxins is common in young children, while disease is rare. The production of one or even both toxins is not always sufficient for producing symptoms.
The typical cold symptoms due to a cold gradually go away or slowly become less severe over days. Watch for these symptoms that your cold getting better: Fewer body aches. Less nasal congestion ...
Understanding this incubation period—the time between when a virus enters a person’s body and ... People infected by one of the four coronaviruses that cause common colds usually start feeling ...
There are at least four lineages of human metapneumovirus—A1, A2, B1 and B2. Avian metapneumovirus has been divided into four subgroups—A, B, C and D. Bayesian estimates suggest that human metapneumovirus emerged 119–133 years ago and diverged from avian metapneumovirus around 1800.
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