Norovirus: A Highly Contagious and Persistent Virus
Norovirus is a virus known for its highly contagious nature, capable of infecting a person with just a few particles. Its ability to survive on various surfaces for extended periods makes it a formidable adversary. From refrigerated foods to doorknobs and floors, the virus can persist for weeks, defying conventional cleaning protocols. Interestingly, handwashing, rather than hand sanitizer, is the only effective method to eliminate it. Moreover, unlike other viruses, norovirus has the potential to re-infect the same individual multiple times, further complicating its transmission and control.
Measles: A Highly Contagious Disease
Measles is widely recognized as one of the most contagious diseases worldwide. Although some cases may manifest with mild symptoms, this virus can be fatal in certain situations. In the United States, it was successfully eliminated by the year 2000. However, in 2014, the country witnessed a resurgence with over 600 new reported cases. Measles is primarily transmitted through contact with contaminated surfaces or by inhaling droplets expelled by infected individuals. Notably, the virus can remain suspended in the air for up to two hours following a cough or sneeze from an infected person.