Eco-epidemiological aspects of Trypanosoma cruzi, Trypanosoma rangeli and their vector (Rhodnius pallescens) in Panama
The eco-epidemiology of T. cruzi infection was investigated in the Eastern border of the Panama Canal in Central Panama. Between 1999 and 2000, 1110 triatomines were collected: 1050 triatomines (94.6%) from palm trees, 27 (2.4%) from periurban habitats and 33 (3.0%) inside houses. All specimens were...
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| Veröffentlicht in: | Revista do Instituto de Medicina Tropical de São Paulo 2004-07, Vol.46 (4), p.217-222 |
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| description | The eco-epidemiology of T. cruzi infection was investigated in the Eastern border of the Panama Canal in Central Panama. Between 1999 and 2000, 1110 triatomines were collected: 1050 triatomines (94.6%) from palm trees, 27 (2.4%) from periurban habitats and 33 (3.0%) inside houses. All specimens were identified as R. pallescens. There was no evidence of vector domiciliation. Salivary glands from 380 R. pallescens revealed a trypanosome natural infection rate of 7.6%, while rectal ampoule content from 373 triatomines was 45%. Isoenzyme profiles on isolated trypanosomes demonstrated that 85.4% (n = 88) were T. cruzi and 14.6% (n = 15) were T. rangeli. Blood meal analysis from 829 R. pallescens demonstrated a zoophilic vector behavior, with opossums as the preferential blood source. Seroprevalence in human samples from both study sites was less than 2%. Our results demonstrate that T. cruzi survives in the area in balanced association with R. pallescens, and with several different species of mammals in their natural niches. However, the area is an imminent risk of infection for its population, consequently it is important to implement a community educational program regarding disease knowledge and control measures. |
| doi_str_mv | 10.1590/s0036-46652004000400008 |
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Between 1999 and 2000, 1110 triatomines were collected: 1050 triatomines (94.6%) from palm trees, 27 (2.4%) from periurban habitats and 33 (3.0%) inside houses. All specimens were identified as R. pallescens. There was no evidence of vector domiciliation. Salivary glands from 380 R. pallescens revealed a trypanosome natural infection rate of 7.6%, while rectal ampoule content from 373 triatomines was 45%. Isoenzyme profiles on isolated trypanosomes demonstrated that 85.4% (n = 88) were T. cruzi and 14.6% (n = 15) were T. rangeli. Blood meal analysis from 829 R. pallescens demonstrated a zoophilic vector behavior, with opossums as the preferential blood source. Seroprevalence in human samples from both study sites was less than 2%. Our results demonstrate that T. cruzi survives in the area in balanced association with R. pallescens, and with several different species of mammals in their natural niches. However, the area is an imminent risk of infection for its population, consequently it is important to implement a community educational program regarding disease knowledge and control measures.</description><identifier>ISSN: 0036-4665</identifier><identifier>ISSN: 1678-9946</identifier><identifier>EISSN: 0036-4665</identifier><identifier>EISSN: 1678-9946</identifier><identifier>DOI: 10.1590/s0036-46652004000400008</identifier><identifier>PMID: 15361974</identifier><identifier>CODEN: RMTSAE</identifier><language>eng</language><publisher>Brazil: Instituto de Medicina Tropical de Sao Paulo</publisher><subject>Animals ; Chagas Disease - epidemiology ; Chagas Disease - transmission ; Ecosystem ; Endemic Diseases ; Female ; Humans ; Insect Vectors - parasitology ; Male ; Panama Canal Zone - epidemiology ; Rhodnius - parasitology ; Risk Factors ; Seroepidemiologic Studies ; TROPICAL MEDICINE ; Trypanosoma - classification ; Trypanosoma - isolation & purification ; Trypanosoma cruzi - isolation & purification</subject><ispartof>Revista do Instituto de Medicina Tropical de São Paulo, 2004-07, Vol.46 (4), p.217-222</ispartof><rights>Copyright Instituto de Medicina Tropical de Sao Paulo Jul/Aug 2004</rights><rights>This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3398-3cd72632496284432ef2ba33b37da5ddf34cb90d1b21246b42926fe599e59df63</citedby><cites>FETCH-LOGICAL-c3398-3cd72632496284432ef2ba33b37da5ddf34cb90d1b21246b42926fe599e59df63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,860,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15361974$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Vasquez, Ana Maria de</creatorcontrib><creatorcontrib>Samudio, Franklyn E</creatorcontrib><creatorcontrib>Saldaña, Azael</creatorcontrib><creatorcontrib>Paz, Hector M</creatorcontrib><creatorcontrib>Calzada, José E</creatorcontrib><title>Eco-epidemiological aspects of Trypanosoma cruzi, Trypanosoma rangeli and their vector (Rhodnius pallescens) in Panama</title><title>Revista do Instituto de Medicina Tropical de São Paulo</title><addtitle>Rev Inst Med Trop Sao Paulo</addtitle><description>The eco-epidemiology of T. cruzi infection was investigated in the Eastern border of the Panama Canal in Central Panama. Between 1999 and 2000, 1110 triatomines were collected: 1050 triatomines (94.6%) from palm trees, 27 (2.4%) from periurban habitats and 33 (3.0%) inside houses. All specimens were identified as R. pallescens. There was no evidence of vector domiciliation. Salivary glands from 380 R. pallescens revealed a trypanosome natural infection rate of 7.6%, while rectal ampoule content from 373 triatomines was 45%. Isoenzyme profiles on isolated trypanosomes demonstrated that 85.4% (n = 88) were T. cruzi and 14.6% (n = 15) were T. rangeli. Blood meal analysis from 829 R. pallescens demonstrated a zoophilic vector behavior, with opossums as the preferential blood source. Seroprevalence in human samples from both study sites was less than 2%. Our results demonstrate that T. cruzi survives in the area in balanced association with R. pallescens, and with several different species of mammals in their natural niches. However, the area is an imminent risk of infection for its population, consequently it is important to implement a community educational program regarding disease knowledge and control measures.</description><subject>Animals</subject><subject>Chagas Disease - epidemiology</subject><subject>Chagas Disease - transmission</subject><subject>Ecosystem</subject><subject>Endemic Diseases</subject><subject>Female</subject><subject>Humans</subject><subject>Insect Vectors - parasitology</subject><subject>Male</subject><subject>Panama Canal Zone - epidemiology</subject><subject>Rhodnius - parasitology</subject><subject>Risk Factors</subject><subject>Seroepidemiologic Studies</subject><subject>TROPICAL MEDICINE</subject><subject>Trypanosoma - classification</subject><subject>Trypanosoma - isolation & purification</subject><subject>Trypanosoma cruzi - isolation & purification</subject><issn>0036-4665</issn><issn>1678-9946</issn><issn>0036-4665</issn><issn>1678-9946</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9UdtKAzEQDaJYrf6CBh9Ewa25bbp5FPEGBUXr85JNshrJJmvSFfTr3dJSb-DDMMPMOWcOMwDsYzTCuUCnCSHKM8Z5ThBiaBGoWANbq8H6t3oAtlN66RECCb4JBjinHIsx2wJvFypkprXaNDa48GSVdFCm1qhZgqGG0_jeSh9SaCRUsfuwJz9aUfon4yyUXsPZs7ERvvXMEOHR_XPQ3nYJttI5k5Tx6RhaD--kl43cARu1dMnsLvMQPF5eTM-vs8nt1c352SRTlIoio0qPCaeECU4KxigxNakkpRUda5lrXVOmKoE0rggmjFeMCMJrkwvRh645HYLRQjcpa1woX0IXfb-wfJjfpvxzwJ5wuCC0Mbx2Js3KxvbmnZPehC6VnBdcMDJXPvgFXGljwXNcIEF60HgBUjGkFE1dttE2Mr6XGJXzR_7jY28p31WN0V-85efoJ486lnM</recordid><startdate>200407</startdate><enddate>200407</enddate><creator>Vasquez, Ana Maria de</creator><creator>Samudio, Franklyn E</creator><creator>Saldaña, Azael</creator><creator>Paz, Hector M</creator><creator>Calzada, José E</creator><general>Instituto de Medicina Tropical de Sao Paulo</general><general>Instituto de Medicina Tropical</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7RV</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>88I</scope><scope>8AF</scope><scope>8AO</scope><scope>8C1</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>CLZPN</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9-</scope><scope>K9.</scope><scope>KB0</scope><scope>M0R</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M2P</scope><scope>MBDVC</scope><scope>NAPCQ</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>S0X</scope><scope>7X8</scope><scope>GPN</scope></search><sort><creationdate>200407</creationdate><title>Eco-epidemiological aspects of Trypanosoma cruzi, Trypanosoma rangeli and their vector (Rhodnius pallescens) in Panama</title><author>Vasquez, Ana Maria de ; 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Between 1999 and 2000, 1110 triatomines were collected: 1050 triatomines (94.6%) from palm trees, 27 (2.4%) from periurban habitats and 33 (3.0%) inside houses. All specimens were identified as R. pallescens. There was no evidence of vector domiciliation. Salivary glands from 380 R. pallescens revealed a trypanosome natural infection rate of 7.6%, while rectal ampoule content from 373 triatomines was 45%. Isoenzyme profiles on isolated trypanosomes demonstrated that 85.4% (n = 88) were T. cruzi and 14.6% (n = 15) were T. rangeli. Blood meal analysis from 829 R. pallescens demonstrated a zoophilic vector behavior, with opossums as the preferential blood source. Seroprevalence in human samples from both study sites was less than 2%. Our results demonstrate that T. cruzi survives in the area in balanced association with R. pallescens, and with several different species of mammals in their natural niches. 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| subjects | Animals Chagas Disease - epidemiology Chagas Disease - transmission Ecosystem Endemic Diseases Female Humans Insect Vectors - parasitology Male Panama Canal Zone - epidemiology Rhodnius - parasitology Risk Factors Seroepidemiologic Studies TROPICAL MEDICINE Trypanosoma - classification Trypanosoma - isolation & purification Trypanosoma cruzi - isolation & purification |
| title | Eco-epidemiological aspects of Trypanosoma cruzi, Trypanosoma rangeli and their vector (Rhodnius pallescens) in Panama |
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