Manson Tropical Diseases 22nd Edition Pdf Free 21 LINK
Click Here ->>> https://urlin.us/2tdyII
A global scale-up of vector control, including indoor residual spraying (i.e., the application of insecticides on walls in order to kill mosquitoes that rest on their protective surface), has greatly reduced the number of malaria cases, but this is a continuous, intensive, and expensive effort, and the number of affected people has not yet started to decrease. Furthermore, this strategy is highly unsuitable when considering the current malaria situation, because it is applied to all vector species, not just to the most important vectors especially in Africa, such as Anopheles gambiae sensu stricto mosquitoes. In this context, the development of drugs, bed nets and vaccines (especially for PP) have reached a different stage. Education programs help to prevent malaria and break the cycle of infection. Poverty limits the use of nets, and therefore, has a significant impact on the selected and treated population, especially children. Education along with awareness campaigns regarding the risk factors of malaria further increase the chances of self-protection by mothers, educate and care for children, reduce the number of cases caused by the disease, and prevent the possible transmission of the disease to non-immune close contacts of the affected person.1, 2, 3
Several tropical diseases (such as Rocky Mountain spotted fever (RMSF), dengue, and schistosomiasis) are caused by small, round parasites. Most of these parasites are transmitted by a specific form of blood relative, saltwater, freshwater, or vector biting freshwater animals. Some organisms exhibit only an intermediate host, such as a lampreys. In some cases, people contract infections through contact with blood, tissue, or secretions from infected animals. Some diseases are capable of moving from one species to another. Diseases spread by contact with infected people, either directly or by way of vectors, like mosquitoes, and through the water supply, often requiring small streams, springs, or other relatively small sources of water. For most vectors, two necessary conditions can occur. First, the vector must be able to regularly ingest and drink the blood of their host. Second, the vector must be able to find a human or animal host in the surrounding area to accommodate the start and growth of the parasite and the transfer of disease to human hosts. d2c66b5586