Onchocerciasis, or river blindness, is a neglected tropical disease (NTD) caused by the parasitic worm Onchocerca volvulus. It is transmitted through repeated bites by blackflies of the genus Simulium. The disease is called river blindness because the blackfly that transmits the infection lives and ...breeds near fast-flowing streams and rivers, mostly near remote rural villages. The infection can result in visual impairment and sometimes blindness. Additionally, onchocerciasis can cause skin disease, including intense itching, rashes, or nodules under the skin. Worldwide onchocerciasis is second only to trachoma as an infectious cause of blindness.
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Scabies is an infestation of the skin by the human itch mite (Sarcoptes scabiei var. hominis). The microscopic scabies mite burrows into the upper layer of the skin where it lives and lays its eggs. The most common symptoms of scabies are intense itching and a pimple-like skin rash. The scabies mite... usually is spread by direct, prolonged, skin-to-skin contact with a person who has scabies.
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Each year, rabies causes approximately 59,000 deaths worldwide. Despite evidence that control of dog rabies through animal vaccination programs and elimination of stray dogs can reduce the incidence of human rabies, dog rabies remains common in many countries and exposure to rabid dogs is still the ...cause of over 90% of human exposures to rabies and of 99% of human rabies deaths worldwide. CDC experts in the Poxvirus and Rabies Branch conduct an annual assessment of individual countries’ rabies status worldwide which considers the presence of wildlife rabies, canine rabies variant (dog rabies), and non-rabies lyssaviruses.
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A regimen of four 1-mL doses of HDCV or PCEC vaccines should be administered intramuscularly to previously unvaccinated persons.
The first dose of the four-dose course should be administered as soon as possible after exposure. Additional doses should be administered on days 3, 7, and 14 after the... first vaccination. For adults, the vaccination should always be administered intramuscularly in the deltoid area (arm). For children, the anterolateral aspect of the thigh is also acceptable. The gluteal area should never be used for rabies vaccine injections because observations suggest administration in this area results in lower neutralizing antibody titers.
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Rabies is a fatal but preventable viral disease. It can spread to people and pets if they are bitten or scratched by a rabid animal. In the United States, rabies is mostly found in wild animals like bats, raccoons, skunks, and foxes. However, in many other countries dogs still carry rabies, and most... rabies deaths in people around the world are caused by dog bites.
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Website last accessed in 12.03.23
CDC’s Lauren Greenberg writes about building rabies diagnostic capacity in the effort to control rabies in countries that are most affected by the disease.
The term leishmaniasis encompasses multiple clinical syndromes, including the cutaneous, mucosal, and visceral forms, which result from infection of macrophages in the dermis, in the naso-orpharyngeal mucosa, and throughout the reticuloendothelial system, respectively. The infection can range from a...symptomatic to severe in all of these forms. Cutaneous and mucosal leishmaniasis can cause severe morbidity; visceral and mucosal leishmaniasis can be life threatening.
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Website last accessed on 18.03.2023
Education and information about ascariasis, including fact sheets and information on prevention and control, epidemiology, diagnosis and treatment.
Website last accessed on 18.03.2023
Website last accessed on 18.03.2023
Education and information about hookworm including fact sheets and information on prevention and control, epidemiology, diagnosis and treatment.
Websites last accessed on 24.03.2023
A parasite is an organism that lives on or in a host and gets its food from or at the expense of its host. Parasites can cause disease in humans.
Website last accessed on 24.03.2023
Education and information about Soil-Transmitted Helminths including Human Hookworm, Roundworm and Whipworm.
Website last accessed on 24.03.2023
A parasite is an organism that lives on or in a host and gets its food from or at the expense of its host. Parasites can cause disease in humans.
Website last accessed in 24.03.2023
CDC provides continuing education for professionals involved in rabies prevention and control. While CDC provides some resources directly, others are offered through partnerships and collaborations with other ...public health entities. This page contains a collection of course notifications, education materials, and continuing education courses related to rabies prevention and control.
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Website last accessed on 31.03.2023
Conozca la presentación clínica y la clasificación del dengue.
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Dengue, Dengue virus, dengue hemorrhagic fever, dengue fever, flavivirus, Aedes mosquitoes, DHF, DF, DSS
Website last accessed on 31.03.2023
Learn about dengue clinical presentation and classification.
Website last accessed on 31.03.2023
Learn about dengue diagnosis and testing guidance.
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Learn how to protect your pregnancy from dengue.
Website last accessed on 31.03.2023
Learn about dengue virus infection symptoms and treatment.