A viral challenge is a new disease that begins to show up as an outbreak of new, often non-viral disease in a population.
Most viral challenges have a low risk of causing an outbreak, but some have a high risk.
The CDC defines a viral challenge as a new, non-infectious disease that affects more than 100,000 people.
Some viral challenges are new and have very little risk of becoming an outbreak.
Some viruses, however, can cause an outbreak if they’re transferred from a person to another person.
The following are the most common viral challenges and the symptoms they can cause.
The most common causes of viral challenges.
Common causes of a viral infection The following causes of new viral challenges in adults have been found in the United States.
The American Academy of Family Physicians lists viral challenges as the third most common cause of chronic disease in adults.1 Some viruses can cause symptoms if they spread from person to person.
Common symptoms of an outbreak: a.
Headaches and/or fever; b.
Muscle aches; d.
Rash-like symptoms; g.
Muscle pain; h.
Loss of appetite; j.
Weight loss; k.
Difficulty walking; l.
Dry mouth; m.
Joint pain; n.
Muscle weakness; p.
Muscle spasms; t.
Felt or itchiness; u.
Skin redness; v.
Constriction; and w.
Irregular bleeding.1 Common causes for new viral infections: a: Acute or chronic respiratory infections: b.
Infection due to the common cold or flu: c.
Other viral causes of acute or chronic pneumonia: d.
Other infections of the urinary tract, such as urinary tract infections: e.
Other bacterial infections: f.
Other urinary tract and gastrointestinal infections: g.
Other chronic infections: h.
Other autoimmune conditions: i.
Other respiratory conditions: j.
Other immunosuppressant drugs: k.
Other organ transplant conditions: l.
Other types of cancer: m.
Other infectious diseases: n.
Other genetic diseases: o.
Other cancers that are not caused by a particular infectious disease: p.
Other disorders that affect immune function or cause inflammation, including: q.
Other conditions affecting immune function: s.
Other diseases that affect the immune system: t.
Other cancer syndromes that affect organ function: u.
Other immune system disorders: v.
Other causes of chronic pneumonia, including non-cancerous causes of fever, cough, or joint pain: w.
Other inflammatory conditions: x.
Other non-immune system conditions that cause infections, including allergies: z.
Other metabolic diseases: A. Non-cancerary disorders caused by metabolic disorders: b: Non-muscle disorders: c: Muscle-related disorders: d: Other metabolic disorders caused in a person’s body, such the inflammatory bowel disease: e: Other gastrointestinal disorders: f: Other digestive disorders: g: Other autoimmune disorders: h: Other musculoskeletal disorders: i: Other disorders of the circulatory system, including aortic dissection: j: Other noncervical disorders: k: Other vascular disorders: l: Other systemic disorders: m: Other cardiac disorders: n: Other infections caused by an immune system condition: o: Other viral infections caused in the circulating system, such a pneumonia, hepatitis, or HIV infection: p: Other chronic viral infections, such asthma: q: Other inflammatory bowel diseases, such ulcerative colitis: r.
Other allergic disorders, including asthma: s: Other immune-mediated disorders: t: Other conditions of the digestive tract, including intestinal lice: u: Other bacterial and fungal infections, other bacterial infections, and bacterial infections of other organs: v: Other organ systems that are damaged or fail in a way that can cause inflammation: w: Other physical conditions, including skin and nail disorders, other infections of skin and nails: x: Other diseases, including diabetes and cardiovascular disease, that are caused by infections of organs or the digestive system: 1.
Noncancerous conditions that do not cause an infection: b) Cancer: c) Cancer caused by infection: d) Other cancer related conditions: e) Other viral diseases: f) Other inflammatory diseases: g) Other cancers caused by other infections: s) Other conditions that can affect immune functions: 3.
Infectious diseases: h) Other diseases and conditions that are usually curable: k) Other infections that can result in chronic illness: l) Other autoimmune diseases: m) Other metabolic conditions: n) Other gastrointestinal conditions: o) Other vascular conditions: p) Other systemic conditions: q) Other disorders related to immune function, including chronic fatigue syndrome, psoriasis, arthritis, asthma