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.
It is the only screening test that also prevents many colorectal cancers. Here are a few things you should know about this test: 1  During a colonoscopy, your doctor examines the lining of your entire colon to check for polyps or tumors. 2  If any polyps are found, they can be removed immediately.isten. Colorectal cancer is cancer that begins in the colon or the rectum. It is the third most common cancer among both men and women in the United States, and it occurs most often in people over the age of 50.