Infrared heat may be a hot new trend in grilling, but this type of heat has been occurring naturally since the dawn of time. In fact, everything with a temperature above absolute zero (which is equal to -459.67 degrees Fahrenheit or -273.15 degrees Celsius) emits at least a little infrared radiation.
For example, bacterial and viral causes of pinkeye are almost always contagious and are spread from person to person. However, pinkeye caused by allergens and chemical irritants is not contagious by person-to-person contact. Pinkeye that is contagious has an incubation period as long as 14 days. However, most doctors do not think that pinkeye becomes contagious to other people until symptoms start to develop.
1 pink eye caused by virus or bacteria is highly contagious but during the incubation period for pink eye it is not contagious bacterial conjunctivitis becomes contagious when the symptoms start to appear and continue for 24 hours after an antibiotic is givenncubation period for pink eye caused by virus is around 12 hours to 3 days and a person can go back to work or school when the symptoms improve that would be in 3 to 5 days