What kind of vaccines are available for vector-borne diseases?

Vaccines specifically targeting certain vector-borne diseases have been developed and are available for use in humans. For example, vaccines exist for diseases such as West Nile Virus and Eastern Equine Encephalitis (EEE), which are transmitted by mosquitoes. The development of these vaccines is crucial for public health, especially in areas where these diseases are prevalent.

This option reflects the reality that while a variety of vector-borne diseases exist, an effective vaccine is not available for every single one. Thus, the option correctly indicates that vaccines are available for limited but significant vector-borne diseases, highlighting the ongoing progress in medical science to combat these illnesses. The existence of vaccines specifically for diseases like West Nile Virus and EEE is a key aspect of managing the risks associated with these diseases that vectors, such as mosquitoes, pose to public health.