Ancylostoma ceylanicum (Looss, 1911) in a Filipino Woman

Velasquez, Carmen C.; Cabrera, Benjamin C.

doi:10.2307/3277059

Cited by 29 publications

(18 citation statements)

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“…The phylogenetic tree was obtained with the neighbour-joining analysis of ITS sequences of four hookworm species (A. caninum, A. ceylanicum, A. braziliense and U. stenocephala) ( fig. Ancylostoma ceylanicum has been reported mostly in Asia, including India (Chowdhury & Schad, 1972), Thailand (Setasuban et al, 1976;Traub et al, 2004), Laos (Scholz et al, 2003;Sato et al, 2010), Malaysia (Ngui et al, 2011), Indonesia (Lie & Tan, 1959;Margono et al, 1979), Borneo (Choo et al, 2000), Philippines (Velasquez & Cabrera, 1968) and Taiwan (Yoshida et al, 1968). They were classified into different clusters.…”

Section: Discussionmentioning

confidence: 99%

Molecular identification of hookworms in stray and shelter dogs from Guangzhou city, China using ITS sequences

et al. 2013

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Canine hookworm infections are endemic worldwide, with zoonotic transmission representing a potentially significant public health concern. This study aimed to investigate hookworm infection and identify the prevalent species from stray and shelter dogs in Guangzhou city, southern China by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) based on internal transcribed spacer (ITS) sequences. From March 2011 to July 2012, fresh faecal samples from a total of 254 dogs were obtained from five locations, namely Conghua, Baiyun, Liwan, Haizhu and Panyu, in Guangzhou. These samples were screened for the presence of hookworm eggs using light microscopy, with an overall prevalence of 29.53% being recorded. The highest prevalence of 45.28% was found in suburban dogs from Conghua compared with lower values recorded in urban dogs in Haizhu (21.43%), Baiyun (18.97%), Panyu (18.18%) and Liwan (15%). The prevalence in stray dogs was signiﬁcantly higher than that in shelter dogs. PCR-RFLP analysis showed that 57.33% were detected as single hookworm infections with Ancyclostoma caninum, and 22.67% as A. ceylanicum, while 20% were mixed infections. This suggests that high prevalences of both hookworm species in stray and shelter dogs in China pose a potential risk of transmission from pet dogs to humans.

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Section: Discussionmentioning

confidence: 99%

Molecular identification of hookworms in stray and shelter dogs from Guangzhou city, China using ITS sequences

et al. 2013

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“…Natural infections with A. ceylanicum have been reported in servicemen from The Netherlands returning from West New Guinea, who had heavy infections with concurrent anemia. 30 Mostly light infections have been reported in humans in the Philippines, 31 Taiwan, 32 Thailand, 33 and India. 34 More recently, zoonotic ancylostomiasis caused by A. ceylanicum has been reported in rural communities in Thailand 9,10 and Laos.…”

Section: Discussionmentioning

confidence: 99%

Molecular Identification of Human Hookworm Infections in Economically Disadvantaged Communities in Peninsular Malaysia

Ngui¹,

Lee²,

Kai³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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Abstract. Species identification of human hookworm infections among eight communities in rural areas of Peninsular Malaysia was determined during 2009-2011. Fecal samples were examined by microscopy and subsequently, the internal transcribed spacer 2 and 28S ribosomal RNA region of Necator americanus and Ancylostoma spp. were sequenced. Overall, 9.1% (58 of 634) were identified positive by microscopy for hookworm infection, and 47 (81.0%) of 58 were successfully amplified and sequenced. Sequence comparison found that N. americanus (87.2%) was the most predominant hookworm identified, followed by Ancylostoma ceylanicum (23.4%). No A. duodenale infection was detected in this study. Detection of A. ceylanicum in humans highlighted the zoonotic transmission among humans living near dogs. Thus, implementation of effective control measures for hookworm infections in future should seriously consider this zoonotic implication.

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“…This has been demonstrated both experimentally [14], [15] and naturally. Natural infections with A. ceylanicum have been reported in Dutch servicemen returning from West New Guinea, who suffered heavy infection with concurrent anemia [16], whilst light infections have been mostly reported from humans in the Philippines [17], Taiwan [18], Thailand [19] and India [20]. More recently, zoonotic ancylostomiasis caused by A. ceylanicum was reported in temple and rural communities in Thailand [21], [22] and rural communities in Laos PDR [23] using copro-molecular diagnostic tools.…”

Section: Introductionmentioning

confidence: 99%

Epidemiological and Genetic Data Supporting the Transmission of Ancylostoma ceylanicum among Human and Domestic Animals

et al. 2012

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BackgroundCurrently, information on species-specific hookworm infection is unavailable in Malaysia and is restricted worldwide due to limited application of molecular diagnostic tools. Given the importance of accurate identification of hookworms, this study was conducted as part of an ongoing molecular epidemiological investigation aimed at providing the first documented data on species-specific hookworm infection, associated risk factors and the role of domestic animals as reservoirs for hookworm infections in endemic communities of Malaysia.Methods/FindingsA total of 634 human and 105 domestic canine and feline fecal samples were randomly collected. The overall prevalence of hookworm in humans and animals determined via microscopy was 9.1% (95% CI = 7.0–11.7%) and 61.9% (95% CI = 51.2–71.2%), respectively. Multivariate analysis indicated that participants without the provision of proper latrine systems (OR = 3.5; 95% CI = 1.53–8.00; p = 0.003), walking barefooted (OR = 5.6; 95% CI = 2.91–10.73; p<0.001) and in close contact with pets or livestock (OR = 2.9; 95% CI = 1.19–7.15; p = 0.009) were more likely to be infected with hookworms. Molecular analysis revealed that while most hookworm-positive individuals were infected with Necator americanus, Ancylostoma ceylanicum constituted 12.8% of single infections and 10.6% mixed infections with N. americanus. As for cats and dogs, 52.0% were positive for A. ceylanicum, 46.0% for Ancylostoma caninum and 2.0% for Ancylostoma braziliense and all were single infections.ConclusionThis present study provided evidence based on the combination of epidemiological, conventional diagnostic and molecular tools that A. ceylanicum infection is common and that its transmission dynamic in endemic areas in Malaysia is heightened by the close contact of human and domestic animal (i.e., dogs and cats) populations.

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Ancylostoma ceylanicum (Looss, 1911) in a Filipino Woman

Cited by 29 publications

References 0 publications

Molecular identification of hookworms in stray and shelter dogs from Guangzhou city, China using ITS sequences

Molecular identification of hookworms in stray and shelter dogs from Guangzhou city, China using ITS sequences

Molecular Identification of Human Hookworm Infections in Economically Disadvantaged Communities in Peninsular Malaysia

Epidemiological and Genetic Data Supporting the Transmission of Ancylostoma ceylanicum among Human and Domestic Animals

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