[Trend analysis of schistosomiasis endemic situation in Anhui Province from 2004 to 2014]. 2015

Shi-qing Zhang, and Feng-hua Gao, and Jia-chang He, and Gong-hua Zhang, and Hao Wang, and Tian-ping Wang

OBJECTIVE To analyze the changes of schistosomiasis endemic situation in Anui Province from 2004 to 2014, so as to provide the evidence for formulating "The thirteenth five year" schistosomiasis control plan. METHODS The information for schistosomiasis control and the data of the endemic surveillance of schistosomiasis were collected and analyzed for the changes of schistosomiasis endemic situation in Anhui Province from 2004 to 2014. RESULTS The Oncomelania hupensis snail areas presented on a rising trend, and reached to the largest area with about 3.1 billon m2in 2011. However, the snail areas decreased from 2012, and reduced by 10.55% in 2012 compared with the areas in 2011, and reduced to the lowest level in 2014 in recent 10 years. The density of living snails presented a fluctuation situation from 2004 to 2008, and on a decreasing trend from 2008, and the density of living snails was below 1 snail/0.l i2 after 2011. The infection rate of snails remained stagnant state from 2004 to 2011, and decreased rapidly in 2012, and no schistosome infected snails were found in 2013 and 2014. The schistosome infection rate of residents decreased gradually, and the number of acute schistosomiasis was under 50 cases with scattered distribution after 2006, and no acute cases occurred in 2013 and 2014. The infection rate of livestock was above 1% from 2004 to 2011, and reduced to 0.55% in 2012, and it was the first time that the infection rate of livestock was lower than that of residents in the same year in 2014. The progress for achieving the goal of schistosomiasis transmission control accelerated after 2011, and the number of counties that reached the standard of schistosomiasis transmission controlled from 2012 to 2014 was 4, 9 and 14 and the number of townships was 33, 76 and 32, respectively. CONCLUSIONS Schistosomiasis control has achieved remarkable effectiveness in Anhui Province, but there still exists hard work to consolidate the achievement and reach schistosomiasis transmission interrupted.

UI MeSH Term Description Entries
D002681 China A country spanning from central Asia to the Pacific Ocean. Inner Mongolia,Manchuria,People's Republic of China,Sinkiang,Mainland China
D004197 Disease Reservoirs Animate or inanimate sources which normally harbor disease-causing organisms and thus serve as potential sources of disease outbreaks. Reservoirs are distinguished from vectors (DISEASE VECTORS) and carriers, which are agents of disease transmission rather than continuing sources of potential disease outbreaks. Humans may serve both as disease reservoirs and carriers. Disease Reservoir,Human Disease Reservoirs,Infectious Disease Reservoir,Reservoirs of Infection,Infectious Disease Reservoirs,Disease Reservoir, Human,Disease Reservoir, Infectious,Disease Reservoirs, Human,Human Disease Reservoir,Infection Reservoir,Infection Reservoirs,Reservoir, Disease,Reservoir, Infectious Disease,Reservoirs, Human Disease
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012552 Schistosomiasis Infection with flukes (trematodes) of the genus SCHISTOSOMA. Three species produce the most frequent clinical diseases: SCHISTOSOMA HAEMATOBIUM (endemic in Africa and the Middle East), SCHISTOSOMA MANSONI (in Egypt, northern and southern Africa, some West Indies islands, northern 2/3 of South America), and SCHISTOSOMA JAPONICUM (in Japan, China, the Philippines, Celebes, Thailand, Laos). S. mansoni is often seen in Puerto Ricans living in the United States. Bilharziasis,Katayama Fever,Schistoma Infection,Bilharziases,Fever, Katayama,Infection, Schistoma,Infections, Schistoma,Schistoma Infections,Schistosomiases
D012908 Snails Marine, freshwater, or terrestrial mollusks of the class Gastropoda. Most have an enclosing spiral shell, and several genera harbor parasites pathogenic to man. Snail
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D019353 Endemic Diseases The constant presence of diseases or infectious agents within a given geographic area or population group. It may also refer to the usual prevalence of a given disease with such area or group. It includes holoendemic and hyperendemic diseases. A holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). A hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. (Last, A Dictionary of Epidemiology, 3d ed, p53, 78, 80) Disease, Endemic,Diseases, Endemic,Endemic Disease

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