What might the bite of a mosquito lead to in vulnerable populations?

The bite of a mosquito can lead to West Nile virus, particularly in vulnerable populations such as the elderly, individuals with weakened immune systems, and those with underlying health conditions. West Nile virus is transmitted through the bite of an infected mosquito that has fed on infected birds. In many cases, the virus may not cause any symptoms, but for some individuals, especially those in high-risk groups, it can lead to more severe neurological diseases, such as meningitis or encephalitis.

Understanding how mosquito-borne diseases like West Nile virus affect certain populations highlights the importance of vector control strategies and public health measures to protect those who are more susceptible. Other options, while serious public health concerns, are not transmitted through mosquito bites. COVID-19 is primarily spread through respiratory droplets, AIDS is transmitted through bodily fluids, and tuberculosis is an airborne disease. Each of these conditions has distinct transmission routes and does not relate to the effects of mosquito bites.