Detection of Toxoplasma gondii in chicken and soil of chicken farms in Nanjing region, China

Liu, Xinchao; He, Yu; Han, Deng-Ge; Zhang, Zhenchao; Li, Ké; Wang, Shuai; Xu, Lixin; Ren, Yan; Li, Xiangrui

doi:10.1186/s40249-017-0277-3

Cited by 30 publications

(24 citation statements)

References 35 publications

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“…The seroprevalence was highest in samples collected in autumn, suggesting that fresh grass used as cattle food may harbor T. gondii oocysts, and a humid environment favors the survival of oocysts in this season. The results of the present study agree with those of previous reports [ 29 – 31 ]. However, some studies have shown that season is not a risk factor for T. gondii infection [ 32 , 33 ].…”

Section: Discussionsupporting

confidence: 94%

Low prevalence of antibodies against Toxoplasma gondii in dairy cattle from China’s central region

Dong

et al. 2018

BMC Vet Res

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BackgroundToxoplasma gondii is an intracellular protozoan that can infect humans and other animals, including cattle. Cattle are one of the world’s main sources of meat, and people who consume raw or undercooked meat and milk of cattle infected with T. gondii can become infected. In this study, a total of 5292 dairy cattle serum samples, collected from 17 cities (Henan Province, China) from January 2015 to September 2017, were screened for antibodies against T. gondii.ResultsAntibodies to T. gondii were found in 1.93% (102/5292) (95% CI, 1.56–2.30) of dairy cattle using a modified agglutination test (cut-off 1:100). The results showed that geographic location and season may be risk factors for T. gondii infection of cattle (P < 0.05), and the seroprevalence of T. gondii in cattle along the Yellow River is higher than other areas.ConclusionsThis is the first large-scale investigation on the seroprevalence of T. gondii infection in cattle from Central China. This survey shows that the T. gondii infection rate of dairy cattle is low; however, these findings provide additional information on the epidemiology of Chinese T. gondii. The possibility of dairy cattle exposure to T. gondii in Central China can not be ignored, and the consumption of raw or undercooked beef or milk may pose a risk to human health.

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Section: Discussionsupporting

confidence: 94%

Low prevalence of antibodies against Toxoplasma gondii in dairy cattle from China’s central region

Dong

et al. 2018

BMC Vet Res

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“…According to the effect of seasons on infection with T. gondii, Autumn was recorded the highest rate of infection with significant difference, the present study consistent with the study (22) in China where they revealed that T. gondii was found in 6 (3.33%) samples collected in Autumn and 1 (0.56%) collected in winter, this indicated that seasons might have important impacts on the presence of T. gondii, likewise (23) recorded rising in infection rate during winter and spring than Autumn and summer and referred to that seasonal variation of T. gondii infection in human are remarkably different than animals, also seasonal variation study on pregnant women in France appeared that the maximal risk of infection between end of summer to end of Autumn (24). this may be related to the availability of favorable conditions for oocysts maturation and sporulation to become infective (25).…”

Section: Discussionsupporting

confidence: 90%

Investigate the Toxoplasma gondii infection in the consumed beef in Al-Diwaniyah province

Sakban¹,

A’aiz²

2020

IJVS

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Toxoplasmosis is very important zoonotic disease in the world cause by an obligate intracellular protozoan parasite called Toxoplasma gondii can infect human and all warm-blood animals, beef consider from most important source for infection with T. gondii and there is no really data and study about the rate of the infection in beef in Al-Diwaniyah province, so for this reason the aim of this work was designed. A total of 300 samples which collected from heart, tongue, muscles, of 100 slaughtered beef of local and imported cattle, throughout the period from September 2017 to May 2018, initially examined microscopically for searching on T. gondii bradyzoites then all suspected samples was subjected to conventional PCR technique through B1gene amplification to confirm the infection, in addition to analyzed the recorded data for each sample to determine the effect of some factors on prevalence of infection like organ, season and animal age. Out of 300 tested samples only 53 were confirm positive T. gondii DNA. The infection in local beef was higher (22%) than in imported (13.5%), while there is no difference in infection among different examined organs. Regarding to effect of some factors, the autumn season recorded highest rate of infection with significant differences rather than others seasons in both local and imported beef, whereas, age appears with no effect on infection. The local cattle meat is riskier than the imported due to the higher rate of infection with T. gondii, and the animal age cannot affect on the infection rate, in comparing with the season which play role in this rate.

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“…Moreover, humid environment exist in these seasons may favor the survival of T. gondii oocysts. Our findings were similar to results of previously published works [53,62,63]. Though, some surveys have exposed negative portion of season for incidence of T. gondii [64,65].Previous work [66] described that 85 out of 3531 (2.41%) samples collected through autumn seasons were positive for T. gondii.…”

Section: Discussionsupporting

confidence: 92%

Seasonal and Age Distribution of Toxoplasma gondii in Milk of Naturally Infected Animal Species and Dairy Samples

2020

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RIMARY infection by Toxoplasma gondii is habitually food borne and ingestion of foods with animal origins is measured as a risk factor. The current survey was performed to assess the seasonal and age distribution of T. gondii in diverse kinds of raw milk and traditional dairy products. Three-hundred and seventy raw milk and traditional dairy samples were collected and subjected to DNA extraction. B1 specific gene of T. gondii was perceived by means of the molecular technique. Eighteen out of 370 (4.86%) studied samples were positive for T. gondii. Molecular incidence of T. gondii in raw milk was 6.08%. T. gondii was also perceived in 2.85% of studied traditional dairy samples, respectively. Sheep milk (10%) and cheese (6.66%) had the uppermost molecular incidence of parasite. Molecular incidence of T. gondii in raw camel milk and cream and butter samples were 3.33%, 5% and 5%, respectively. Samples which were collected through autumn (15.55%) and summer (9.37%) seasons had the maximum molecular incidence of T. gondii. Raw milk samples of older than 4 years animal species (11.39%) had the maximum molecular incidence of T. gondii. The existingsurvey is the first report of seasonal and age distribution of T. gondii in diverse kinds of dairy samples. Raw sheep, goat, buffalo, bovine and camel milk and also traditional cheese, cream and butter dairy samples may harbor T. gondii infection. Seasonal and senile distribution should be measured for molecular incidence of T. gondii in milk of primary infected animals and also traditional dairy products.

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Detection of Toxoplasma gondii in chicken and soil of chicken farms in Nanjing region, China

Cited by 30 publications

References 35 publications

Low prevalence of antibodies against Toxoplasma gondii in dairy cattle from China’s central region

Low prevalence of antibodies against Toxoplasma gondii in dairy cattle from China’s central region

Investigate the Toxoplasma gondii infection in the consumed beef in Al-Diwaniyah province

Seasonal and Age Distribution of Toxoplasma gondii in Milk of Naturally Infected Animal Species and Dairy Samples

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