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A multi-state survey of consumer food-handling and food-consumption practices.

INTRODUCTION: In the United States, foodborne infections cause an estimated 6.5-33 million illnesses a year. Also included in the burden of foodborne illnesses are sequelae such as hemolytic uremic syndrome, Guillain-Barré syndrome, and reactive arthritis. Surveillance for risky food-handling and food-consumption practices can be used to identify high-risk populations, develop educational efforts, and evaluate progress toward risk reduction. DESIGN: In 1995 and 1996, Behavioral Risk Factor Surveillance System interviews of 19,356 adults in eight states (1995: Colorado, Florida, Missouri, New York, and Tennessee; 1996: Indiana, New Jersey, and South Dakota) included questions related to food-handling and/or food-consumption practices. Risky food-handling and food-consumption practices were not uncommon. Overall, 19% of respondents did not adequately wash hands or cutting boards after contact with raw meat or chicken. During the previous year, 20% ate pink hamburgers, 50% ate undercooked eggs, 8% ate raw oysters, and 1% drank raw milk. Men were more likely to report risky practices than women. The prevalence of most risky behaviors increased with increasing socioeconomic status. CONCLUSION: Targeted education efforts may reduce the frequency of these behaviors. Periodic surveillance can be used to assess effectiveness. In addition to consumer education, prevention efforts are needed throughout the food chain including on the farm, in processing, distribution, and at retail.

Adolescent↗

Identification and classification of consumer food-handling behaviors for food safety education.

OBJECTIVE: To identify key behaviors associated with major food safety pathogen control factors. DESIGN: World Wide Web-based descriptive study with 4 tasks: compile a list of food-handling behaviors from the literature; use Delphi process to build consensus, rank order, and edit lists of behaviors; assess content and construct validity; and review results of Delphi process at a summit meeting of selected experts to make final recommendations for a food safety behavior list. SUBJECTS/SETTING: A convenience sample of 10 epidemiologists, 11 food microbiologists, 10 food safety educators, and 10 food safety policy makers was recruited from lists of nationally known experts. Twenty-four experts completed 4 rounds of surveys presented to them via a Web site. Six experts attended a face-to-face meeting to finalize behavior lists. Statistical analyses performed Descriptive statistics and sum of observation data were used to determine rank order and validity. RESULTS: Twenty-nine key food-handling behaviors for maintaining the safety of food and reducing the number of cases and outbreaks of foodborne illness were identified. These were rank-ordered within 5 pathogen control factors: practice personal hygiene, cook foods adequately, avoid cross-contamination, keep foods at safe temperatures, and avoid foods from unsafe sources. APPLICATIONS/CONCLUSIONS: This list of rank-ordered behaviors grouped by pathogen control factor should help dietitians and educators confidently teach food safety guidance that will be most effective in preventing illness.

Consumer Product Safety↗

[Animal husbandry and food handling today. Current food preservation has changed the intestinal flora].

In the modern world, as refrigerated storage has replaced lactic acid fermentation methods of food preservation, we no longer ingest large quantities of live lactobacilli with our food, but relatively large numbers of potentially pathogenic Gram-negative bacteria instead. In the brave new world, antibiotics are used as growth-promoting additives in animal feed in every country but Sweden. The antibiotics used in Europe at low dosages, and exempt from prescription requirements, include macrolides, streptogramins and nitro-imidazoles. There is reason to believe that avoparcin, recently banned in Europe as an antibiotic animal feed additive, has contributed to the occurrence of vancomycin-resistant enterococci in humans. Animal foodstuffs production in Europe and the USA is so intensive that it provides very favourable conditions for the spread of bacteria. Pig, cattle and poultry breeding in Europe are beset by formidable difficulties in the form of Salmonella infections, which constitute not only a hygiene but also a clinical problem. Sweden, the bravest of brave new worlds, faces an increase in the influx of domestic animals and foodstuffs from other countries, and in general less restrictive regulations concerning food production and animal husbandry, but reduced powers of control. Thus, we may expect problems both with pathogens (traditional ones such as Salmonella, and potential ones such as food-spoilage Gram-negative bacteria), and with antibiotic-resistant bacteria in our food-stuffs, to become greater.

Animal Husbandry↗

Consumer food handling in the home: a review of food safety studies.

Epidemiological data from Europe, North America, Australia, and New Zealand indicate that a substantial proportion of foodborne disease is attributable to improper food preparation practices in consumers' homes. International concern about consumer food safety has prompted considerable research to evaluate domestic food-handling practices. The majority of consumer food safety studies in the last decade have been conducted in the United Kingdom and Northern Ireland (48%) and in the United States (42%). Surveys (questionnaires and interviews), the most frequent means of data collection, were used in 75% of the reviewed studies. Focus groups and observational studies have also been used. One consumer food safety study examined the relationship between pathogenic microbial contamination from raw chicken and observed food-handling behaviors, and the results of this study indicated extensive Campylobacter cross-contamination during food preparation sessions. Limited information about consumers' attitudes and intentions with regard to safe food-handling behaviors has been obtained, although a substantial amount of information about consumer knowledge and self-reported practices is available. Observation studies suggest that substantial numbers of consumers frequently implement unsafe food-handling practices. Knowledge, attitudes, intentions, and self-reported practices did not correspond to observed behaviors, suggesting that observational studies provide a more realistic indication of the food hygiene actions actually used in domestic food preparation. An improvement in consumer food-handling behavior is likely to reduce the risk and incidence of foodborne disease. The need for the development and implementation of food safety education strategies to improve specific food safety behaviors is reviewed in this paper.

Consumer Product Safety↗

Epidemic cholera in West Africa: the role of food handling and high-risk foods.

During an epidemic of cholera in Guinea, West Africa, in 1986, the authors conducted two studies of risk factors for transmission. In the capital city, 35 hospitalized cholera patients were more likely than 70 neighborhood-matched controls to have eaten leftover peanut sauces (odds ration (OR) = 3.1, 95% confidence interval (CI) 1.2-8.2), but less likely to have eaten tomato sauces (OR = 0.2, 95 percent CI 0.1-0.9). Hand washing with soap before meals by all family members protected against cholera (OR = 0.2, 95 percent CI 0.02-0.96), suggesting that persons asymptomatically infected with Vibrio cholerae 01 may have been the initial source for contamination of the leftover foods. Laboratory studies demonstrated that V. cholerae multiplied rapidly in peanut sauce (pH 6.0), but not in the more acidic tomato sauce (pH 5.0). In an outbreak of cholera-like illness after a rural funeral, illness was strongly associated with eating a rice meal served over many hours without reheating. These studies demonstrated that, in this epidemic, many cases of severe cholera were associated with eating specific cooked foods that could support bacterial growth after contamination of these foods with V. cholerae within the household. Epidemic control efforts should include identification of high-risk foods and promotion of simple changes in food handling behaviors to lower the risk of foodborne transmission.

Adolescent↗

A video study of Australian domestic food-handling practices.

Poor food-handling and hygiene practices in domestic kitchens are thought to be the cause of a significant amount of foodborne illness. Food-handling practices were studied by video observation in 40 home kitchens in Melbourne, Australia. Participant households included those of single people, couples, and families from a range of socioeconomic backgrounds. The kitchens were continuously video monitored for 1 or 2 weeks during 1997 and 1998. Infrequent hand washing; poor hand-washing technique; lack of hand washing prior to food preparation; inadequate cleaning of kitchen surfaces; involvement of pets in the kitchen; touching of the face, mouth, nose, and/or hair during food preparation; and lack of separate hand and dish towels were the most common unhygienic practices observed. Prior to video surveillance, participant households answered a food-safety questionnaire that related to preparation and handling of food. These answers were contrasted with the actual practices observed in each household. There was a significant variance between stated (answers provided in response to the questionnaire) and observed (via video monitoring) food-handling and hygiene practices. The results of this study raise concerns about consumer food-handling and hygiene practices in Australian domestic kitchens. A continuous and increased effort in the education of the public in the area of hygienic food preparation is indicated.

Australia↗

A camera's view of consumer food-handling behaviors.

OBJECTIVE: To compare consumer food-handling behaviors with the Fight BAC! consumer food-safety recommendations. DESIGN: Subjects were videotaped in their home while preparing a meal. Videotapes were coded according to Fight BAC! recommendations. A food-safety survey was administered and temperature data was collected. SUBJECTS/SETTING: A market research company randomly recruited subjects by telephone. Ninety-nine consumers participated (92 women, seven men). STATISTICAL ANALYSIS PERFORMED: Descriptive statistics were used. RESULTS: Overall, subjects did not follow the Fight BAC! recommendations for safe food handling. Handwashing was inadequate. The average hand wash length was significantly lower than the 20-second recommendation. Only one-third of subjects' hand wash attempts were with soap. Surface cleaning was inadequate with only one-third of surfaces thoroughly cleaned. Moreover, one-third of subjects did not attempt to clean surfaces during food preparation. Nearly all subjects cross-contaminated raw meat, poultry, seafood, eggs, and/or unwashed vegetables with ready-to-eat foods multiple times during food preparation. Unwashed hands were the most common cross-contamination agent. Many subjects undercooked the meat and poultry entrees. Very few subjects used a food thermometer. APPLICATIONS/CONCLUSIONS: Consumers make many food-handling errors during food preparation, increasing their risk of foodborne illness. Dietetics professionals need to familiarize themselves with the Fight BAC! consumer food-safety recommendations; understand where consumers are making food-handling errors; increase food safety awareness; and educate consumers, especially those in high-risk populations, about safe food handling at home.

Consumer Product Safety↗

Consumer food handling recommendations: is thawing of turkey a food safety issue?

While it is important that dietitians and other health or food professionals provide consistent messages to the public about food safety, it is equally important that the information be evidence-based. Conflicting recommendations are evident when reviewing consumer publications from food safety advisory groups and the scientific literature. In addition, caveats are attached to the various food-handling methods. Pathogens, spoilage microorganisms, and contamination of the work area are the major concerns in thawing turkey. While several methods, including thawing on the counter at ambient temperatures, can be employed for thawing turkey, cooking to an adequate internal temperature, validated with a meat thermometer, is the more critical step. The findings indicate that providing clients or consumers with clear, consistent, evidence-based messages is difficult for food and health professionals. Further research is required to corroborate best practices in a kitchen setting. This paper is of interest to professionals who counsel clients at high risk for foodborne illness, or who counsel consumers about safe preparation of foods such as turkey.

Animals↗

Consumer knowledge of foodborne microbial hazards and food-handling practices.

A national telephone survey was conducted of 1,620 randomly selected U.S. residents who spoke English, were at least 18 years old, and resided in households with kitchen facilities. Respondents were interviewed about their recognition of foodborne pathogens, foods at risk for transmitting infection, knowledge of safe food handling, and food-handling practices. One-third of the respondents who prepared meals reported unsafe food hygiene practices: e.g., they did not wash hands or take precautions to prevent cross-contamination from raw meat. Unsafe practices were reported more often by men, adults 18 to 29 years of age, and occasional food preparers than by women, persons 30 years old or older, and frequent food preparers. Respondents who identified a food vehicle for Salmonella spp. were more likely to report washing their hands and cleaning cutting boards after preparing raw meat and poultry. The results raise concerns about consumer food-handling practices. The influence of food safety training, food-handling experience, and age on food-handling practices should be studied further. Awareness of a food vehicle for Salmonella spp., for example, may indicate knowledge of the etiology of foodborne disease that promotes safe food handling. Understanding the factors associated with safe food handling will assist in development of effective safe-food instruction programs.

Adolescent↗

Use of the Health Belief Model to examine older adults' food-handling behaviors.

OBJECTIVE: To measure the association among Health Belief Model (HBM) variables and safe food-handling behaviors among older adults. DESIGN: A mail survey using Dillman's Total Design Method. SETTING: In October 1999, a survey was sent to volunteers from a preexisting cohort of noninstitutionalized older adults living throughout Nevada. Data collection continued through January 2000. PARTICIPANTS: With a 56% response rate, the sample (n = 266) was composed mainly of women (73%) and individuals from urban counties (74%). The mean age was 68.09 years (SD = 8.27). Except for gender, sample characteristics were similar to those of the preexisting cohort. VARIABLES MEASURED: Perceived threat of foodborne illness (ie, perceived severity and perceived susceptibility), cues to action (ie, media cues and educational cues), and safe food-handling behaviors (ie, sanitation and cross-contamination). ANALYSIS: Rank order correlation coefficients were computed to measure the association among variables. Significance was set at P <.05. RESULTS: Cues to action were positively related to perceived threat of foodborne illness and safe food-handling behaviors. Perceived severity of foodborne illness was positively related to one dimension of safe food-handling behaviors (ie, sanitation). CONCLUSIONS AND IMPLICATIONS: The HBM is a useful framework for examining food-handling behaviors among older adults.

Aged↗

Multistate surveillance for food-handling, preparation, and consumption behaviors associated with foodborne diseases: 1995 and 1996 BRFSS food-safety questions.

PROBLEM/CONDITION: In 1995, CDC, the Food and Drug Administration (FDA), and several state health departments collaboratively developed questions regarding food safety. This set of questions was used to collect data about food-handling, preparation, and consumption behaviors that have been associated with foodborne diseases in adults. These data will help characterize persons at high risk for foodborne illness and assist in developing food-safety education strategies for consumers and foodhandlers that are intended to reduce foodborne illness. REPORTING PERIOD COVERED: January 1995-December 1996. DESCRIPTION OF SYSTEM: Data were collected by using the 12 food-safety questions, which were administered with the 1995 Behavioral Risk Factor Surveillance Systems (BRFSS) in Colorado, Florida, Missouri, New York, and Tennessee, and the 1996 BRFSS in Indiana and New Jersey. In addition, data were collected in South Dakota from two of the standardized questions that deal with consumption of undercooked eggs and pink hamburgers. The BRFSS is a state-based system that surveys noninstitutionalized adults by telephone about their health behaviors and practices. RESULTS: This study included 19,356 completed questionnaires (2,461 in Colorado; 3,335 in Florida; 2,212 in Indiana; 1,572 in Missouri; 3,149 in New Jersey; 2,477 in New York; 2,110 in South Dakota; and 2,040 in Tennessee). During the previous 12 months, 50.2% of respondents reported eating undercooked eggs (95% confidence interval [CI] = 49.2-51.2); 23.8% reported eating home-canned vegetables (95% CI = 22.5-24.5); 19.7% reported eating pink hamburgers (95% CI = 18.9-20.5); 8.0% reported eating raw oysters (95% CI = 7.5-8.5); and 1.4% reported drinking raw milk (95% CI = 1.2-1.6). The prevalence of not washing hands with soap after handling raw meat or chicken and not washing a cutting board with soap or bleach after using it for cutting raw meat or chicken were 18.6% (95% CI = 17.8-19.4) and 19.5% (95% CI = 18.6-20.4), respectively. Less than half of respondents (45.4%, 95% CI = 44.2-46.6) reported seeing safe food-handling label information on raw meat products. In addition, among those persons who reported they remembered seeing the label information, 77.2% (95% CI = 76.0-78.4) remembered reading the label information, and 36.7% reported changing their meat and poultry preparation habits because of the labels (95% CI = 35.2-38.2). When population characteristics were considered in the analysis, all high-risk food-handling, preparation, and consumption behaviors were more prevalent in men than in women. Eating pink hamburgers during the previous 12 months was more commonly reported by whites (22.3%) than by blacks (6.5%). The prevalence of reported consumption of pink hamburgers during the previous. 12 months decreased with age (18-29 years: 21.8%, 30-59 years: 21.9%, and 60-99 years: 13.2%); increased with education (less than grade 12: 12.0%, high school graduate: 16.5%, and any college education: 24.0%); and increased with income (< $15,000: 11.8%, $15,000-$34,999: 17.6%, $35,000-$49,999: 22.0%, and > or = $50,000: 28.6%). INTERPRETATION: During 1995-1996, several high-risk food-handling, preparation, and consumption behaviors were common, and some were particular to specific population groups. Based on this analysis, interventions are needed to reduce the prevalence of these risky behaviors. All consumers and foodhandlers could benefit from food-safety education. ACTIONS TAKEN: Behavioral surveillance systems can provide data that identify persons or groups in which behaviors associated with foodborne diseases are more common and who are at higher risk for foodborne illness. State-specific data can assist in developing food-safety education programs and, if collected periodically, can be used to evaluate program effectiveness.

Adult↗

Evaluation of safe food-handling instructions on raw meat and poultry products.

Every year in the United States, millions of people become ill, thousands of people die, and substantial economic costs are incurred from foodborne diseases. As a measure to prevent foodborne diseases, since July 1994, the U.S. Department of Agriculture has required that safe food-handling labels be placed on retail packages of raw or partially cooked meat and poultry products. Through selected states' Behavioral Risk Factor Surveillance System (BRFSS) interviews, survey data were collected to determine the proportion of adults aware of the label and adults who reported changing their raw meat-handling practices because of the label. Fifty-one percent of the 14,262 respondents reported that they had seen the label. Of these, 79% remembered reading the label, and 37% of persons who reported that they had seen and read the label reported changing their raw meat preparation methods because of the label. Women were more likely than men to have read the label, as were persons who are at least 30 years of age compared to younger adults (P < 0.05). Both label awareness and risky food-handling behaviors increased with education and income, suggesting that safe food-handling labels have limited influence on consumer practices. Our results also suggest that the labels might be more effective in discouraging cross-contamination than in promoting thorough cooking practices. We suggest that the label is only one component among many food safety education programs that are needed to inform consumers about proper food-handling and preparation practices and to motivate persons who have risky food-handling and preparation behaviors to change these behaviors.

Adolescent↗

Control of food handling by cutaneous receptor input in squirrels.

In a complementary neuroanatomical study by Brenowitz in 1980, it was shown that tree squirrels (Sciurus niger) have a higher relative density of mechanoreceptors in their glabrous forepaw skin than do ground squirrels (Spermophilus tridecemlineatus). The main purpose of this sudy was to test the prediction that tree squirrels would depend upon somatic sensory (cutaneous) input from their forepaws to a greater extent than would ground squirrels in food handling behavior. In addition, a series of more general questions about the sensory control of food handling was examined. First, using different sized food items, it was shown that food handling (rate of manipulation) is subject to sensory control, in general. Secondly, comparision of sham-operated groups with groups receiving median nerve (innervating the palmar surface) lesions showed that cutaneous input from the volar surface of the forepaw contributes to the sensory control in both species of squirrels. Thirdly, comparison of lesion effects in the two species showed that, as predicted, tree squirrels depend upon cutaneous input from their volar forepaw to a greater extent than do ground squirrels. Fourthly, by reanalyzing the above data it was shown that there is continued sensory feedback from food items rather than only an initial evaluation of them.

Animals↗