Where is schistosomiasis most prevalent?
An estimated 85% of the world’s cases of schistosomiasis are in Africa, where prevalence rates can exceed 50% in local populations. Schistosoma mansoni and S. haematobium are distributed throughout Africa; only S. haematobium is found in areas of the Middle East, and S.
What is the geographical distribution of schistosomiasis?
Geographic Distribution Schistosoma mansoni is found primarily across sub-Saharan Africa and some South American countries (Brazil, Venezuela, Suriname) and the Caribbean, with sporadic reports in the Arabian Peninsula. S. haematobium is found in Africa and pockets of the Middle East.
Is schistosomiasis in the USA?
Schistosomiasis, also known as bilharzia, is a disease caused by parasitic worms. Although the worms that cause schistosomiasis are not found in the United States, people are infected worldwide. In terms of impact this disease is second only to malaria as the most devastating parasitic disease.
What countries are affected by schistosomiasis?
Risk areas According to the World Health Organisation (WHO), in 2012, the countries with the highest prevalence of schistosomiasis are Sierra Leone, Ghana, Tanzania, Mozambique and Madagascar. Most of the rest of sub-saharan Africa has moderate prevalence, along with the Philippines, Yemen and some areas of Brazil.
Which countries have schistosomiasis?
Are blood flukes in the USA?
In North America, most cases are reported from the upper Midwest. In the southwest U.S., this phenomenon has not been well studied, and it is not known which schistosome species are present, or if cercarial dermatitis occurs with any regularity.
Can you get a parasite from peeing in a lake?
They live in lakes, rivers, reservoirs and canals and can infect anyone who comes into contact with contaminated water. Once a person is infected, the parasites then pass out eggs in their urine or faeces (stools), which can survive in water for up to seven days. Schistosomiasis is a disease associated with poverty.