Measles is a highly contagious viral disease that spreads primarily through the air when an infected person coughs, sneezes, talks, or breathes. The virus is present in the nose and throat mucus of the infected individual and can be inhaled by others nearby, leading to infection

. Key points about how measles spreads:

• Airborne transmission: The virus is carried in respiratory droplets that are expelled into the air and can remain infectious for up to two hours in the air or on surfaces after the infected person has left the area

• Direct contact: People can also become infected by touching surfaces contaminated with these droplets and then touching their eyes, nose, or mouth

• Highly contagious: If one person has measles, about 90% of unvaccinated people close to them will also become infected

• Contagious period: A person with measles can spread the virus from about four days before the rash appears until about four days after the rash starts

• Only humans spread measles: The virus does not infect animals and is transmitted only from person to person

Preventive measures include vaccination and avoiding close contact with infected individuals. Hygiene practices such as washing hands, using tissues when coughing or sneezing, and not sharing personal items can reduce the risk of spread

. In summary, measles spreads through airborne respiratory droplets and contaminated surfaces, making it one of the most contagious diseases known