Which practice is essential in breaking the chain at the "portal of exit" and "mode of transmission"?

Proper hygiene is essential in breaking the chain at the "portal of exit" and "mode of transmission" because it directly impacts the ways through which infections can spread. Maintaining good hygiene practices, such as handwashing, helps to minimize the risk of pathogens exiting the body and entering another person's system. When individuals practice proper hygiene, they reduce the contamination of surfaces and the potential for droplets or pathogens to transfer during interactions.

This practice addresses the portal of exit by ensuring that any pathogens present are effectively removed from an individual before they can leave the body and infect others. Additionally, by adhering to hygiene standards, individuals effectively reduce the mode of transmission, whether it be through direct contact, respiratory droplets, or contaminated surfaces. Thus, focusing on proper hygiene is a proactive approach in preventing the spread of infections within communities.