What Are the Causes of Liver Spots? The appearance of liver spots is quite common in men and women over the age of 40. Liver spots develop over time, usually taking years to appear, and, although they have the word liver in their name, these dark patches on the skin have nothing to do with the human liver or liver disease.
Mosquito vectored diseases include protozoan diseases, i.e., malaria, filarial diseases such as dog heartworm, and viruses such as dengue, encephalitis and yellow fever.
1 Mosquitoes become infected when they feed on a person already infected with the virus. 2  Infected mosquitoes can then spread the virus to other people through bites. 3  Chikungunya virus is most often spread to people by Aedes aegypti and Aedes albopictus mosquitoes.4  These are the same mosquitoes that transmit dengue virus. Infected mosquitoes can then spread the virus to other people through bites. 2  Chikungunya virus is most often spread to people by Aedes aegypti and Aedes albopictus mosquitoes. 3  These are the same mosquitoes that transmit dengue virus.