Becoming exposed to or infected with an infectious microbe does not necessarily mean developing a noticeable disease. Explain.
The most recent example of the same can be seen in the pandemic of COVID-19. The effects of this virus spread across the world over a significant population. Though being the same disease, it affected the population with symptomatic and asymptomatic conditions. An individual’s immune system counters the infectious microbe and kills the same by specialised cells. In the case of strong immunity, the cells activate as the infectious microbe enters into the body and removes the same. This is why it does not necessarily mean developing a noticeable disease.