What Are the Key Factors Affecting Disease Transmission?

Several factors influence disease transmission:

1. Pathogen Characteristics: The virulence, infectivity, and survival of a pathogen outside the host play a significant role.
2. Host Factors: The immune status, behavior, and demographics of the host population affect susceptibility and exposure.
3. Environmental Conditions: Climate, geography, and sanitation influence the survival and spread of pathogens.
4. Social and Economic Factors: Population density, healthcare access, and socioeconomic status can facilitate or hinder disease spread.