Fish zoonoses of the tropics: A Review

2021 ◽  
Vol 18 (1) ◽  
pp. 1-12
Author(s):  
K.I. Sunday ◽  
F.B. Ada

The possibilities of pathogens transmitting zoonotic diseases to fish or aquatic environments are dependent on seasons, patients’ contact with fish or fish related environment, nutritional habits and the immune system level of the exposed individual. Consumption of aquatic food is on the increase, and thus explains the answers to the increase in zoonotic contraction cases found in man. Zoonotic infections can be classified into infections caused by: a) direct interaction with infected animals b) consumption of raw or undercooked aquatic products. Pathogens may be natives of the said aquatic environment or may occur as a result of environmental pollution such as the use of fertilizer, human waste or any of the anthropogenic substances. Zoonotic infections can be passed to man through fish via any of the following hosts: Helminths, Bacteria, Protozoa and Arthropods.Nevertheless, once the chemistry and control of zoonoses is understood, putting up measure to adequately address them when necessary will not be challenging. More so, educating the public on the need for prevention, proper cooking of aquatic products, and also a constant reminder of potential dangers are necessary to reinforce proper sea food handling practices. Keywords: Zoonoses, Fish, Effect and Control

2002 ◽  
Vol 129 (2) ◽  
pp. 277-285 ◽  
Author(s):  
S. M. PARRY ◽  
S. R. PALMER ◽  
J. SLADER ◽  
T. HUMPHREY ◽  
THE SOUTH EAST WALES INFECTIOUS DISEASE LIAISON GROUP

Domestic kitchen food handling risk factors for sporadic salmonella food poisoning are largely unknown. We compared food consumption and food handling practices, opportunities for cross contamination and refrigerator temperature control, in 99 households in South East Wales in 1997/8 with a case of salmonella food poisoning, and control households matched for electoral ward. On univariate analyses, cases were significantly more likely than control respondents to have purchased free-range eggs in the preceding week, and more likely than control households to have handled frozen whole chicken in the previous week, and to handle raw chicken portions at least weekly. In multivariate analysis, only consumption of raw eggs and handling free-range eggs were significant risk factors, independent of the age structure of the family and of the season.


Crystals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 68
Author(s):  
Mingtang Tan ◽  
Jun Mei ◽  
Jing Xie

Although freezing has been used to delay the deterioration of product quality and extend its shelf life, the formation of ice crystals inevitably destroys product quality. This comprehensive review describes detailed information on the effects of ice crystals on aquatic products during freezing storage. The affecting factors (including nucleation temperature, freezing point, freezing rate, and temperature fluctuation) on the size, number, distribution, and shape of ice crystals are also elaborated in detail. Meanwhile, the corresponding technologies to control ice crystals have been developed based on these affecting factors to control the formation of ice crystals by inhibiting or inducing ice crystallization. In addition, the effects of ice crystals on the water, texture, and protein of aquatic products are comprehensively discussed, and the paper tries to describe their underlying mechanisms. This review can provide an understanding of ice crystallization in the aquatic products during freezing and contribute more clues for maintaining frozen food quality.


Food Control ◽  
2021 ◽  
pp. 108361
Author(s):  
Denise van Rijen ◽  
Enrique Mergelsberg ◽  
Gill ten Hoor ◽  
Barbara Mullan

Author(s):  
Sinh Dang-Xuan ◽  
Hung Nguyen-Viet ◽  
Phuc Pham-Duc ◽  
Delia Grace ◽  
Fred Unger ◽  
...  

Pork is the most commonly consumed meat in Vietnam, and Salmonella enterica is a common contaminant. This study aimed to assess potential S. enterica cross-contamination between raw and cooked pork in Vietnamese households. Different scenarios for cross-contamination were constructed based on a household survey of pork handling practices (416 households). Overall, 71% of people used the same knife and cutting board for both raw and cooked pork; however, all washed their hands and utensils between handling raw and cooked pork. The different scenarios were experimentally tested. First, S. enterica was inoculated on raw pork and surfaces (hands, knives and cutting boards); next, water used for washing and pork were sampled to identify the presence and concentration of S. enterica during different scenarios of food preparation. Bootstrapping techniques were applied to simulate transfer rates of S. enterica cross-contamination. No cross-contamination to cooked pork was observed in the scenario of using the same hands with new cutting boards and knives. The probability of re-contamination in the scenarios involving re-using the cutting board after washing was significantly higher compared to the scenarios which used a new cutting board. Stochastic simulation found a high risk of cross-contamination from raw to cooked pork when the same hands, knives and cutting boards were used for handling raw and cooked pork (78%); when the same cutting board but a different knife was used, cross-contamination was still high (67%). Cross-contamination between was not seen when different cutting boards and knives were used for cutting raw and cooked pork. This study provided an insight into cross-contamination of S. enterica, given common food handling practices in Vietnamese households and can be used for risk assessment of pork consumption.


2012 ◽  
Vol 54 (4) ◽  
pp. 179-191 ◽  
Author(s):  
Jordi Sanchez-Ribas ◽  
Gabriel Parra-Henao ◽  
Anthony Érico Guimarães

Irrigation schemes and dams have posed a great concern on public health systems of several countries, mainly in the tropics. The focus of the present review is to elucidate the different ways how these human interventions may have an effect on population dynamics of anopheline mosquitoes and hence, how local malaria transmission patterns may be changed. We discuss different studies within the three main tropical and sub-tropical regions (namely Africa, Asia and the Pacific and the Americas). Factors such as pre-human impact malaria epidemiological patterns, control measures, demographic movements, human behaviour and local Anopheles bionomics would determine if the implementation of an irrigation scheme or a dam will have negative effects on human health. Some examples of successful implementation of control measures in such settings are presented. The use of Geographic Information System as a powerful tool to assist on the study and control of malaria in these scenarios is also highlighted.


Foods ◽  
2018 ◽  
Vol 7 (8) ◽  
pp. 126 ◽  
Author(s):  
Edgar Chambers ◽  
Sandria Godwin ◽  
Taylor Terry

Research has shown that consumers use unsafe food handling practices when preparing poultry, which can increase the risk of foodborne illness such as salmonellosis or campylobacteriosis. Recipes from cookbooks, magazines, and the internet commonly are used as sources for consumers to prepare food in homes and the expectation is that food will be safe when prepared. According to the United States Department of Agriculture (USDA), using a thermometer properly is the only way to accurately check for doneness of poultry. The objective of this study was to assess poultry recipes, including recipes for whole birds and poultry parts, to determine if food safety information concerning thermometer use was included within the recipe. Poultry recipes (n = 474) were collected from 217 cookbooks, 28 magazines, 59 websites, and seven blogs. Approximately 33.5% of the recipes contained a specific temperature for doneness, with 73% of those cooked to ≥165 °F/74 °C, as recommended by USDA. Ninety-four percent of recipes used cooking time and about half of the recipes used visual measurements, such as color or juices running clear, to determine doneness. This study showed that most recipes do not contain appropriate information to assure safe cooking of poultry by consumers. Modifying recipes by adding food safety information, such as thermometer use and proper temperatures, could increase the use of proper food preparation behaviors by consumers.


2016 ◽  
Vol 145 (2) ◽  
pp. 316-325 ◽  
Author(s):  
S. J. CHAI ◽  
D. COLE ◽  
A. NISLER ◽  
B. E. MAHON

SUMMARYAs poultry consumption continues to increase worldwide, and as the United States accounts for about one-third of all poultry exports globally, understanding factors leading to poultry-associated foodborne outbreaks in the United States has important implications for food safety. We analysed outbreaks reported to the United States’ Foodborne Disease Outbreak Surveillance System from 1998 to 2012 in which the implicated food or ingredient could be assigned to one food category. Of 1114 outbreaks, poultry was associated with 279 (25%), accounting for the highest number of outbreaks, illnesses, and hospitalizations, and the second highest number of deaths. Of the 149 poultry-associated outbreaks caused by a confirmed pathogen, Salmonella enterica (43%) and Clostridium perfringens (26%) were the most common pathogens. Restaurants were the most commonly reported location of food preparation (37% of poultry-associated outbreaks), followed by private homes (25%), and catering facilities (13%). The most commonly reported factors contributing to poultry-associated outbreaks were food-handling errors (64%) and inadequate cooking (53%). Effective measures to reduce poultry contamination, promote safe food-handling practices, and ensure food handlers do not work while ill could reduce poultry-associated outbreaks and illnesses.


2017 ◽  
Vol 5 (1) ◽  
pp. 06-14
Author(s):  
Rajesh Jeewon ◽  
Seerauj Nouvishika ◽  
Dauharry Kumar ◽  
Ahinsa Jheelan-Ramchandur

Foodborne diseases have always been linked to numerous food manufacturing elements and home practices of purchasers and the latter does play a critical role in disease prevention. Consumers have the ultimate responsibility for handling and storing food safely and take adequate safety precautions when preparing and consuming food at home to avoid health related problems associated with microbial hazards. The objectives of this survey were to evaluate current knowledge of consumers pertaining to food hygiene and food safety concepts as well as to assess food handling practices that residents adopt to reduce microbial hazards in the domestic environment. A sample of 300 Mauritian residents were selected to participate in a questionnaire based survey. Questions in the questionnaire were based on hygienic practices with respect to food handling, food safety and personal hygiene. SPSS (Statistical Package for Social Sciences) was used to analyze the results and Microsoft excel was used to generate pie charts, and bar charts. The results obtained demonstrated that the level of knowledge pertaining to food safety and food hygiene and how to reduce microbial hazards were above average. Majority of the residents were knowledgeable about major aspects related to proper food handling behaviors but need more education pertaining to the use of thermometers to check for food temperature. The nature of the risk, personal and environmental factors (psychological, demographic and socio-economic factors, cultural and economic) were found to be the factors affecting food safety behaviors among consumers. Consumers can become more motivated to improve their behaviors if they are made aware of the impact of risky practices. Although, most consumers had basic knowledge pertaining to food safety, food hygiene and food handling practices, it is important to continually inform consumers about safe food handling practices through various channels.


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