Rickettsial seropositivity in the indigenous community and animal farm workers, and vector surveillance in Peninsular Malaysia

Kho, Kai Ling; Koh, Fui Xian; Hasan, L I Mohd; Wong, Li Ping; Kisomi, Masoumeh Ghane; Bulgiba, Awang; Nizam, Quaza Nizamuddin Hassan; Tay, Sun Tee

doi:10.1038/emi.2017.4

Cited by 33 publications

(27 citation statements)

References 53 publications

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“…(tick)NATaylor et al (2016)Malaysia R. honei (TT-118)NAHumanTay et al (2003) R. sp. TCM1NARatTay et al (2014) Haemaphysalis bispinosa (tick)SheepKho et al (2017) R. felis Ctenocephalides felis (flea)NATay et al (2014)NAHumanKho et al (2017) R. sp. RF2125 Ctenocephalides felis (flea)NATay et al (2014) and Kho et al (2016) R. conorii NAHumanKho et al (2017) R. sp.…”

Section: Sfgr Infection and Diagnosismentioning

confidence: 99%

Distribution and Ecological Drivers of Spotted Fever Group Rickettsia in Asia

et al. 2019

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Spotted fever group and related rickettsia (SFGR) are a neglected group of pathogens that belong to the genus Rickettsia. SFGR are zoonotic and are transmitted by arthropod vectors, primarily ticks, fleas and mites to accidental hosts. These emerging and re-emerging infections are widely distributed throughout the world. Land-use change and increasing human–wildlife conflict compound the risk of SFGR infection to local people in endemic areas and travelers to these regions. In this article, we discuss the rickettsial organisms causing spotted fever and related diseases, their arthropod vectors in Asia and the impact of land-use change on their spread.

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Section: Sfgr Infection and Diagnosismentioning

confidence: 99%

Distribution and Ecological Drivers of Spotted Fever Group Rickettsia in Asia

et al. 2019

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“…The presence of SFG Rickettsia including R. tamurae was found in Amblyomma and Dermacentor ticks in Thailand (24) and in Haemaphysalis ticks in Peninsular Malaysia (25). In addition, R. tamurae was found in Amblyomma ticks from an area endemic for Brazilian spotted fever in Brazil (26).…”

Section: Discussionmentioning

confidence: 99%

Molecular Investigation of Tick-Borne Pathogens in Ticks removed from Tick-Bitten Humans in the Republic of Korea

Bang¹,

Kim²,

Pyun³

et al. 2019

Preprint

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Background Tick-borne infections are continuously increasing due to climate change, increased outdoor activities and increased travel between countries. This study was to investigate the presence of tick-borne pathogens in ticks removed from tick-bitten humans in southwest provinces of Republic of Korea (ROK). Methods Ticks were obtained from those tick-bitten humans between May 2014 and September 2017 in Jeollanam provinces and Gwangju metropolitan city in ROK. The presence of the tick-borne pathogens in ticks removed from tick-bitten humans was analyzed using pathogen-specific polymerase chain reaction (PCR). Results We identified 33 ticks from three tick species, namely Amblyomma testudinarium (60.6%), Haemaphysalis longicornis (27.3%), and Ixodes nipponensis (12.1%) in order of occurrence by morphology and 16S rDNA-targeting PCR. Tick-borne pathogens were found in 16 ticks using pathogen-specific PCR. From the results, 12 ticks (36.4%) tested positive for spotted fever group (SFG) Rickettsia: Rickettsia monacensis (1/12), R. tamurae (8/12), and Candidatus Rickettsia jingxinensis (3/12). Three ticks (9.1%) were positive for Anaplasma phagocytophilum . In addition, three ticks (9.1%) tested positive for Babesia gibsoni (1/3) and B. microti (2/3). Conclusions In conclusion, we identified three tick species; the most common species was A. testudinarium followed by H. longicornis and I. nipponensis . SFG Rickettsia , A. phagocytophilum , and Babesia spp. were the most frequently detected pathogens in ticks removed from tick-bitten humans. R. tamurae and Ca. R. jingxinensis were firstly detected in Korea. The present results will contribute to the understanding of tick-borne infections in animals and humans in the ROK.

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“…They explained their experience as rashes, pain, itchiness, and in some cases fatigue and fever. Previous studies of these farms illustrated the potential exposure of farmworkers to ticks and TBDs [11][12][13]22].…”

Section: Discussionmentioning

confidence: 99%

“…The vector surveillance of these farms demonstrated the presence of various spotted fever group rickettsiae and R. felis in cattle ticks. Farmworkers of these farms also had detectable IgG antibodies to E. chaffeensis, rickettsial species R. conori and R. felis, and tick-borne encephalitis virus [11][12][13]. Hence, farmworkers as a high-risk group for the tick bite and TBDs should be informed of their susceptibility to tick bites.…”

Section: Discussionmentioning

confidence: 99%

“…A serosurvey of indigenous community and farmworkers in Peninsular Malaysia showed that these groups had a higher likelihood of rickettsial infections as compared to blood donors from urban areas [11]. Recent studies showed the detection of IgG antibodies against Ehrlichia chaffeensis (29.9%), R. felis (16.1%), and both rickettsia species R. felis and R. conorii (5.7%), and tick-borne encephalitis virus (4.2%) among farmworkers of this study [11][12][13]. Furthermore, ticks collected from farm animals, domestic animals in the rural areas and wildlife animals confirmed the presence of Rickettsia spp, Anaplasma spp.…”

Section: Introductionmentioning

confidence: 99%

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A qualitative study to explore farmworkers’ knowledge, beliefs and preventive practices toward ticks and tick-borne diseases

Kisomi

Wong

Tay

et al. 2019

J Infect Dev Ctries

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Introduction: Farmworkers are considered a high-risk group for tick-borne diseases (TBDs). This qualitative study aimed to gain an in-depth understanding of the farmworkers’ experience, knowledge, health beliefs, information needs, and preventive practices of tick bites and TBDs. Methodology: A total of nine focus group discussions with 56 farmworkers across eight animal farms in Peninsular Malaysia were conducted between August and October 2013. Results: Farmworkers explained their experience of tick bites, but no one reported TBDs. Many farmworkers indicated that they did not seek any medical treatment. There was a misconception that ticks are solely pathogenic to farm animals. Farmworkers perceived low severity and susceptibility of tick bites, and low self-efficacy of tick bite prevention, however, a group also perceived susceptibility to getting tick bites due to the characteristics of their job. Barriers for prevention were related to the perception and knowledge towards ticks. Farmworkers requested information about TBDs. Conclusions: This study of farmworkers identified gaps in the knowledge of TBDs, barriers of the tick bite preventive measures and information needs. These findings suggest a need for education programs to improve the knowledge of ticks and TBDs, change health beliefs and address the barriers of tick bite preventive measures.

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Rickettsial seropositivity in the indigenous community and animal farm workers, and vector surveillance in Peninsular Malaysia

Cited by 33 publications

References 53 publications

Distribution and Ecological Drivers of Spotted Fever Group Rickettsia in Asia

Distribution and Ecological Drivers of Spotted Fever Group Rickettsia in Asia

Molecular Investigation of Tick-Borne Pathogens in Ticks removed from Tick-Bitten Humans in the Republic of Korea

A qualitative study to explore farmworkers’ knowledge, beliefs and preventive practices toward ticks and tick-borne diseases

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