Real-Time PCR Assays. Real-time reverse transcriptase-polymerase chain reaction (RT-qPCR) is the most widely used diagnostic assay for detecting norovirus. This assay detects the genetic material (RNA) of the virus. It can be used to test stool, vomitus, and environmental specimens.
Sixty-five percent of children under eight years old watch television daily. On average, they spend about an hour and a half (100 minutes to be exact) watching TV every day. As a group, children under eight spend an average of 25 minutes per day playing video games. 66% of all children under the age of two have watched television. Television watching typically begins at 9 months of age.
It isn't easy to get away from these electronic devices -- and, if you're like most teens, you spend a lot of time with them. The typical teenager logs more than 7 hours a day and more than 50 hours a week glued to a television, computer, or cell phone, research shows. No doubt, screen time can be fun. The problem is that too much of it can take a toll on your health and your grades. Think about these five important facts.