Light can influence disease transmission both directly and indirectly. For instance, ultraviolet light (UV) has germicidal properties and can be used to disinfect surfaces and air, reducing the spread of infectious agents. On the other hand, insufficient light exposure may weaken the immune system, making individuals more susceptible to infections. Additionally, the behavior of vectors such as mosquitoes, which transmit diseases like malaria and dengue, can be affected by light, influencing vector-borne disease dynamics.
