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A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infectious virus particles (virions) attach to and enter susceptible cells. [ 1 ] Examples are the common cold , gastroenteritis , corona , flu , pneumonia .
This is a list of infectious diseases arranged by name, along with the infectious agents that cause them, the vaccines that can prevent or cure them when they exist and their current status. Some on the list are vaccine-preventable diseases .
COVID-19 can show up later than the cold or flu, the Mayo Clinic says. Meanwhile, a cold infection doesn’t usually cause fever or headache, but those are common with flu and COVID-19.
A contagious disease is an infectious disease that can be spread rapidly in several ways, including direct contact, indirect contact, and Droplet contact. [1] [2] These diseases are caused by organisms such as parasites, bacteria, fungi, and viruses. While many types of organisms live on the human body and are usually harmless, these organisms ...
[5]: 28 Most infections are viral in nature, and in other instances, the cause is bacterial. [6] URTIs can also be fungal or helminthic in origin, but these are less common. [7]: 443–445 In 2015, 17.2 billion cases of URTIs are estimated to have occurred. [1] As of 2016, they caused about 3,000 deaths, down from 4,000 in 1990. [8]
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 ]
Asthma: Mycoplasma pneumoniae [4] and Chlamydia pneumoniae infections are associated with the onset and symptoms of asthma. [5]Autoimmune diseases: Autoimmune diseases are associated with Neoehrlichia mikurensis infection, and Borrelia miyamotoi infection, [1] and HIV, [6] and the bacterium Mycobacterium tuberculosis. [7]
Other causes can include acid reflux, asthma, allergies, or other chronic medical conditions, adds Richard Watkins, M.D., an infectious disease physician and professor of medicine at the Northeast ...