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.
Many people do not realize that mosquitoes are vectors of several human diseases including malaria, encephalitis, yellow fever, dengue, and filariasis. Mosquitoes spread West Nile virus from birds to people and horses. Adult mosquitoes are slender, long-legged insects.They have round heads and long, slender wings.When they are resting, the wings lie flat on the insectâs back. Both male and female mosquitoes feed on honeydew, nectar, and plant juices.osquitoes spread West Nile virus from birds to people and horses. Adult mosquitoes are slender, long-legged insects. They have round heads and long, slender wings. When they are resting, the wings lie flat on the insectâs back. Both male and female mosquitoes feed on honeydew, nectar, and plant juices.