Incubation Period. According to the CDC, although the incubation period can range from one to four days, the typical incubation period is two days. People can begin infecting others about one day before any symptoms of the virus appear, and are contagious for about a week after that.nfluenza is a highly contagious respiratory illness. According to the Centers for Disease Control and Prevention, every year between 5 and 20 percent of people in the United States get the flu.
Colon Cancer. There are five common colon cancer tests: colonoscopy, virtual colonoscopy, sigmoidoscopy, barium enema, and stool testing. Each has benefits and drawbacks, so it's best to ask your doctor which colon cancer test is appropriate for you. In the meantime, however, here's an overview of the most common types of colon cancer tests. During a colonoscopy, a doctor inserts a flexible tube (called a colonoscope) into your anus.
The most commonly used colorectal cancer screening tests include a colonoscopy every 10 years, or a stool test for blood every year. Colonoscopy is a procedure where colon polyps can be seen and removed from the colon to prevent colon cancer from developing. Stool testing for blood can detect most colon cancers but does not detect colon polyps. Other types of scope tests, xrays and stool tests are also available for colon cancer screening.