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PubMed2002

Incidence of allergic contact sensitization in Danish adults between 1990 and 1998; the Copenhagen Allergy Study, Denmark.

BACKGROUND: Studies of incidence of contact allergy in a general population have not been reported. Data from incidence studies may support and direct strategies for prevention of contact allergy and allergic contact dermatitis. OBJECTIVE: To study the incidence of contact allergy and evaluate risk factors for developing contact allergy in an adult general population sample. PATIENTS AND METHODS: In 1990 a random sample of 567 persons of the 15-69-year-old population living in the western part of Copenhagen County (Denmark) was patch tested in a cross-sectional study. In 1998 a follow-up study was performed. Of 540 invited, 365 (68%) were patch tested again. RESULTS: In the follow-up study, 37 persons (12%) of the 313 patch-test-negative persons in 1990 had developed one or more positive patch tests (incident contact allergy). Twenty cases (6%) of incident nickel allergy and 25 cases (8%) of incident contact allergy to one or more haptens other than nickel were found. The data indicate that female sex, young age and ear piercing (before 1990) were risk factors for developing nickel allergy. Between 1990 and 1998 metal contact dermatitis was reported in seven women with incident nickel allergy. Six of these women had bought the eliciting item in Denmark before 1995, when vigorous control of the Danish nickel legislation was introduced. CONCLUSIONS: We found a considerable number of incident cases of contact allergy in the adult population. The results of the study support the actions taken to restrict the use of the allergens most frequently encountered, and to increase the labelling demands to products intended for prolonged contact with the skin or a combined action.

Adolescent↗

PubMed1999

Preventive oral health care and health promotion provided for children and adolescents by the Municipal Dental Health Service in Denmark.

OBJECTIVE: To describe the current organization of health promoting and preventive activities within the Danish Municipal Dental Health Service and to assess how the service has chosen to comply with the directives as formulated by the National Board of Health. DESIGN: A cross-sectional survey of the municipal dental health services was carried out on a national scale. Postal questionnaires were used to collect information on active and passive preventive care activities and community-orientated health promotion. SETTING: The survey was conducted to aid the reorientation and adjustment of the Municipal Dental Health Services in Denmark. SUBJECTS: All municipal dental health services in Denmark were considered relevant for the survey and 141 services (71%) responded to the questionnaire. OUTCOME MEASURES: Quantitative methods were used to measure recall-intervals for children and adolescents, passive and active prevention, identification of and care for individuals at risk, and health education. Qualitative methods were applied to record the organization of community health activities. RESULTS AND CONCLUSIONS: The majority of dental services stated that preschool children are called at regular intervals (every 3, 6 or 8 months); school-children and adolescents are most often recalled according to individual needs. Chairside assistants, dentists or dental hygienists give oral hygiene instructions systematically to children of grades 0 through to 3. Fluoride is frequently administered through topical application by dentists; fluoride tables are not used. Permanent molars are sealed when this is indicated. Clinical and socio-behavioural criteria are used to identify children at risk. Half of the services reported school-based health education, and in one-quarter of the municipalities community health activities took place. Adjustment of the services should consider population-directed activities and greater use of ancillary personnel.

Adolescent↗

PubMed2000

A comparative study of the financing, provision and quality of care in nursing homes. The approach of four European countries: Belgium, Denmark, Germany and the Netherlands.

A comparative study of the financing, provision and quality of care in nursing homes. The approach of four European countries: Belgium, Denmark, Germany and the Netherlands As result of an increase in the numbers of frail elderly people, most European countries are facing problems with the financing and provision of services by nursing homes. At the same time, the expectations of quality of these services continue to rise. The main question investigated in this study was that of how countries approach the problems of financing and service provision by nursing homes and, at the same time, attempt to increase the quality levels in these institutions. The study was conducted in Belgium, Denmark, Germany and the Netherlands. A study was made of the relevant literature and questionnaires were sent to experts in each country. The four countries are addressing the problems of financing and sufficient service provision by controlling the use of nursing home services. In addition, financial problems are approached by extending co-payments, encouraging cheaper forms of care and putting pressure on nursing homes to operate at lower costs. Problems in the provision of care are addressed by applying more selective admission criteria and offering alternative forms of care outside the nursing home. As a result nursing home beds are used for those with the greatest care-dependency. Nursing home services are adjusted to rising quality expectations by offering a greater range of provision, decreasing the number of residents per room, improving comfort and improving the training of nursing staff. Another way to increase the quality of care is to separate the housing and service functions. Many nursing homes nowadays collaborate intensively with other facilities for the elderly to cope with all these problems and changes. The workload for nursing home staff has increased because of the increasing care-dependency of residents, the demand for higher quality of services and the financial problems.

Activities of Daily Living↗

PubMed2000

Accuracy of recorded asthma deaths in Denmark in a 12-months period in 1994/95.

Many studies of asthma mortality rely on official registration. The aim of this study was to evaluate the accuracy of death certificates, where asthma was coded as cause of death. In a 12-month period, medical information on all subjects with asthma officially coded as the underlying cause of death in Denmark, was obtained by reviewing hospital records, contacting general practitioners and sometimes close relatives. A panel of four pulmonologists each examined the obtained information and independently assessed the cause of death. Of a total of 218 death certificates, 39 were excluded as the cause of death could not be validated. In 16 (9%) of the subjects death from asthma was judged to be the definite cause of death and in 12 (7%) death from asthma was possible. Of 151 non-asthma deaths coded as due to asthma, 109 were judged to have suffered or died from COPD and 14 from heart disease. The accuracy of Danish death certification in asthma deaths is poor, especially in the elderly, where COPD is often classified as asthma. We conclude that the true asthma mortality in Denmark is substantially lower than officially recorded.

Adult↗

PubMed2004

Winter survival of nuisance fly parasitoids (Hymenoptera: Pteromalidae) in Canada and Denmark.

Independent studies were performed in Canada and in Denmark to assess the survival of parasitic wasps (Hymenoptera: Pteromalidae) wintering in puparia of house fly, Musca domestica Linnaeus (Diptera: Muscidae). Data in Canada were collected for Muscidifurax raptorGirault & Saunders, M. raptorellus Kogan & Legner, M. zaraptor Kogan & Legner, Nasonia vitripennis(Walker), Spalangia cameroni Perkins, Trichomalopsis sarcophagae (Gahan) and Urolepis rufipes (Ashmead) in three microsites at an outdoor cattle facility in southern Alberta. Survival was highest for N. vitripennis, T. sarcophagae and U. rufipes, ranging from near zero to c. 7%. No survival was observed for S. cameroni. Daily mean values for ambient air temperature (DMAT) averaged about -3.5 degrees C during exposure periods. Data for Denmark were collected for M. raptor, S. cameroni and U. rufipes in a dairy barn and in a swine barn. Survival of M. raptor and U. rufipes was higher than that of S. cameroni in the dairy barn (DMAT = 8.6 degrees C), with the three species having similar survival in the swine barn (DMAT = 15.4 degrees C). In both studies, parasitoids in egg stages were least likely to survive. These results identify the potential for T. sarcophagae and U. rufipes to be commercialized for use in northern climates as biocontrol agents for nuisance flies, compare directly the cold-hardiness of commercialized species (i.e. all of the above species excluding T. sarcophagae and U. rufipes), and document the importance of microsite on winter survival.

Animals↗

PubMed1998

Preventive dental care of children and adolescents in the 1990s: Denmark, Iceland, Norway, and Sweden.

This article describes the provision of preventive care for children and adolescents in Denmark, Iceland, Norway, and Sweden in the 1990s. It includes information on personnel giving preventive care, administration of the dental care system, strategies and methods used for prevention, and resources allocated for preventive dental care. In all these countries comprehensive and systematic dental care, subsidized or free of charge, has been instituted for children and adolescents. However, comparisons between the countries show significant differences in the organization of the dental care for children, the time used for preventive care, the recall routines, and the implementation of risk-based and population-based preventive strategies. The relative importance of different caries-prevention methods (fluorides, hygiene, and diet) reported by the clinicians varied between Denmark, Iceland, Norway, and Sweden. While variation poses rather than answers questions concerning effectiveness, available data provide evidence of differences in the input of resources. Unless the dental profession addresses the issue of effectiveness of preventive dental care, politicians and administrators in a cost-containment context will easily conclude that least is best.

Adolescent↗

PubMed2000

Bone and joint tuberculosis in Denmark: increase due to immigration.

We studied the epidemiology of bone and joint tuberculosis (TB) in Denmark during the period 1993-1997, using data in the national Danish TB register. We found 95 cases, accounting for 4% of all tuberculosis cases and 15% of extrapulmonary cases, giving a mean annual incidence of 0.4 per 10(5) in the period. 26 cases were found among native Danes (3-8 cases per year) with a median age of 66 (10-92) years and giving a mean annual incidence of 0.1 per 10(5). Among immigrants, an increasing number of cases of bone and joint TB were diagnosed, increasing from 5 in 1993 to 28 in 1997, giving a total of 69 cases with a mean age of 35 (11-75) years and a mean annual incidence of 4 per 10(5) in the period. The spine was affected in half of the cases. 28 patients had active TB elsewhere in the same period. In most patients, there were no predisposing or risk factors for disease except for ethnicity. Compared to a study of bone and joint TB in Denmark in the 1980s, the total incidence is the same, but there has been a shift in patients from old Danes to young immigrants. The increasing number of bone and joint TB cases among immigrants is due to recent immigration of Somalian refugees, who have a high incidence of TB and a high proportion of extrapulmonary TB. The diagnosis was often delayed several months or years. This study shows that attention must be paid to this condition, particularly in young patients from an endemic immigrant population.

Adolescent↗

PubMed1998

Time trends for peptic ulcer disease in Denmark, 1981-1993. Analysis of hospitalization register and mortality data.

BACKGROUND: Since the mid-1980s there has been great improvement in the available diagnostic tools and treatments for peptic ulcers. The aim of this study was to determine whether these improvements have been paralleled by decreasing age- and sex-specific hospitalization and death rates for peptic ulcers in Denmark. METHODS: The study was based on all discharges from Danish somatic hospitals as registered in the National Hospital Discharge Registry and all the death certificates as registered in the Danish National Board of Health from 1981 through 1993, when a diagnosis of peptic ulcer was recorded. The age- and sex-specific and age-adjusted hospitalization and death rates were estimated. RESULTS: In men the age-adjusted hospitalization rate for all types of peptic ulcers decreased by 0.88, but the mortality increased by 1.19. In women the age-adjusted hospitalization and mortality increased for all types of peptic ulcers. The increasing mortality was mainly due to bleeding and perforated duodenal ulcers. The analysis of the age-specific hospitalization and mortality for peptic ulcer complications showed that the increasing trends mainly occurred among the elderly. CONCLUSION: The improved medical treatment of peptic ulcers has not been paralleled by decreasing hospitalization or death from complicated peptic ulcers in Denmark. On the contrary, we found an increasing hospitalization and mortality from peptic ulcer complications, particularly in elderly Danish people.

Denmark↗

PubMed1998

Adult patients receiving home parenteral nutrition in Denmark from 1991 to 1996: who will benefit from intestinal transplantation?

BACKGROUND: Small-bowel transplantation is an alternative to home parenteral nutrition (HPN) in patients with gut failure. Our aim was to report the indication, diagnosis, morbidity, mortality, and intestinal adaptation in the total cohort of Danish patients receiving HPN at any time during the 5 years between 1 January 1991 and 31 December 1995. The data were analysed against the option of transplantation. RESULTS: HPN was given to 129 patients; 59 (46%) had inflammatory bowel disease (15% died), 26 (20%) had cured cancers (42% died), and 44 (34%) had other diseases (dysmotility, surgical complications, infarcts, and so forth; 27% died). Of these, 60% were new in the HPN program, but only 19% received HPN all 5 years; 31 % had terminated HPN, 19% permanently, and 25% died. Only four deaths were HPN-related. In December 1995, 73 patients were receiving HPN in Denmark, for a prevalence of 13.9 per million, which is the highest in Europe but 10-fold lower than in the United States. CONCLUSIONS: Gut failure was the only indication for HPN in Denmark. Weight loss without gut failure, such as disseminated cancer and acquired immunodeficiency syndrome, was not an indication for HPN. Survival after small-bowel transplantation should be assessed against a sizeable mortality among candidates receiving HPN, and this depends on diagnosis and age. In an HPN population comparable with the Danish, a quarter is likely to die within a period of 5 years, a quarter will terminate HPN, and the others survive with HPN. Small-bowel transplantation can be a lifesaving procedure in the small fraction of foreseeable HPN-related deaths, mainly caused by liver failure. Transplantation will not improve survival in most adult HPN patients, and only an improved quality of life after transplantation justifies this procedure in most HPN patients.

Adolescent↗

PubMed2000

Human leptospirosis in Denmark 1970-1996: an epidemiological and clinical study.

Epidemiological and clinical aspects of 118 laboratory confirmed cases of human leptospirosis in Denmark from 1970 to 1996 were reviewed. Icterohaemorrhagiae (72%) and sejroe (20%) were the most frequent serovars. The incidence of leptospirosis was 0.09/100,000 inhabitants/y. 93% of the patients were 18-64 y old, 90% were men and 72% of the cases occurred from July to November. Occupational exposure was present in 63% (74/118) of the cases (41% fish farmers, 28%, farmers). Eight percent of the patients had travelled abroad, 7% had been exposed to sewers and 4%, had been exposed through recreational activities (fishing). Initial symptoms were generally non-specific. Weil's disease developed in 63%, of the patients, more often in patients infected with the serovar icterohaemorrhagiae (73%) compared to patients infected with serovars sejroe or saxkoebing (25%). The fatality rate was 7%, all due to icterohaemorrhagiae. Though a rare disease in Denmark, leptospirosis should be considered in certain risk groups as a possible diagnosis in patients with acute febrile illness.

Adolescent↗

PubMed2000

Temporal risk assessment for Lyme borreliosis in Denmark.

The prevalence of Borrelia burgdorferi sensu lato in Ixodes ricinus nymphs in Denmark was found to be approximately 5%. The mean abundance of infected nymphs varied from 0.3 to 4.4 per 100 m2 according to site. The seasonal occurrence of infected nymphs in a beech forest coincided with seasonal distribution of neuroborreliosis cases. In order to establish a working hypothesis, it was assumed that the availability of habitats and human habitat preferences is one of the factors leading to low number of neuroborreliosis cases in the spring. In addition, this paper gives a description of the neuroborreliosis cases in Denmark in the period 1985-97 and offers a possible explanation for the variation in cases. The explanation is based on an assessment of tick density, which by comparison with the number of neuroborreliosis cases provides information on the infectivity of ticks. The model suggests that high temperatures and low precipitation in the autumn is essential for the transmission of B. burgdorferi sensu lato to reservoir hosts or development of B. burgdorferi sensu lato within ticks, which secures high tick infectivity in the following season.

Animals↗

PubMed2001

HIV-1 subtypes in Denmark.

The objective of this study was to investigate the presence of non-subtype B HIV-1 in Denmark. The C2-V3-C3 region of the env gene from proviral DNA obtained from patients suspected of being infected with non-subtype B virus was PCR-amplified and directly sequenced. The DNA sequences were aligned with full-length HIV-1 reference strains from each subtype and analysed using the phylogenetic package PHYLIP 3.1. The neighbour-joining method was used with 100 bootstraps. Of the 144 patients included in this study C2-V3-C3 sequences were obtained from 129 patients (90%). The phylogenetic analyses showed that virus from 49 patients (38%) was subtype A, 39 (30%) subtype C, 9 (7%) subtype D, 14 (11%) subtype CRF01_AE, 16 (12%) subtype B, 1 (1%) subtype F and 1 (1%) subtype J. This study demonstrates that almost all subtypes can be detected in Denmark; all non-subtype B infections could be traced to countries with a high prevalence of non-subtype B virus.

DNA, Viral↗

PubMed2002

Trends in the use of highly active antiretroviral therapy in western Denmark 1996-2000.

New antiretroviral drugs, expanding knowledge of their long-term toxic effects and the large number of patients with treatment failure have increased the demand for new strategies in the antiretroviral treatment of HIV-infected patients. The present study was conducted as part of the HIV Cohort Study in western Denmark to reveal trends in the use of antiretrovirals in the region. The cohort includes all patients attached to those centers treating HIV patients in western Denmark. A total of 537 patients who started highly active antiretroviral therapy (HAART) were included. The number of patients receiving HAART increased dramatically in 1996 and 1997 before leveling off, with 45-75 patients initiating treatment annually thereafter. Median follow-up time after initiation of HAART was 151 weeks. An estimated 45.1% of patients had the initial HAART regimen modified during the first year of follow-up. Side-effects and treatment failure were the main reasons for treatment modifications. Major new strategies implemented in the region in 1999 and 2000 included treatment with boosted protease inhibitors and non-nucleoside reverse transcriptase inhibitors.

Adult↗

PubMed2001

Changing demographics in an HIV-infected population: results from an observational cohort study in Western Denmark.

We present demographic data from an observational database of HIV and AIDS in the Western part of Denmark, a region with a population of 2,935,156 individuals (55.1% of the population of Denmark). Five centers in the region treat HIV-positive adults; all patients attached to these centers since 1995 are included in this study. In total, 749 adult HIV-infected individuals were enrolled as of 31 December, 1999. Estimates of prevalence and incidence of HIV infection in the area were 25.9/100,000 and 2.6/100,000, respectively, which are lower than average for the country. The number of newly diagnosed HIV-infected patients remained constant during the period 1995-99, with an average of 62 diagnoses per year. The number of HIV-related deaths declined from 43 in 1995 to 15 in 1999. Of the enrolled patients, 70.9% were of Danish origin, 75% were Caucasians, 69.7% were male and 47.2% had heterosexual contact as their primary risk behavior. There seems to have been a shift in the HIV epidemic in recent years, with a higher proportion of newly diagnosed HIV patients having contracted the infection through heterosexual contact, a higher proportion being immigrants from less developed countries and newly diagnosed individuals getting older.

Adult↗

PubMed2001

Seroprevalence of human granulocytic ehrlichiosis in high-risk groups in Denmark.

The aim of this study was to evaluate the seroprevalence of human granulocytic ehrlichiosis (HGE) among 300 residents in the county of Funen, Denmark. All of these people had either suspected or confirmed borreliosis. Two hundred control sera were included in the study. Samples were submitted by general practitioners and by hospital departments. An indirect immunofluorescence assay was used to identify sera reactive to HGE and an enzyme-linked immunosorbent assay was used to analyse Borrelia burgdorferi antibodies. There were 63 (21%) HGE-positive sera, 53 of which came from Borrelia-seropositive patients. Among patients with negative Borrelia serology, but with clinical suspicion of borreliosis, 14.3% were HGE-positive (n = 70). Of the 200 control sera, 3.5% were HGE-positive and 10.5% were Borrelia-positive. No HGE-positive samples were found among subjects < 20 y of age, wheras 20.4% of Borrelia seropositive samples where from subjects < 20 y of age. No mortality was observed in the HGE-positive group and the percentage of serum samples positive for both Borrelia and HGE did not differ significantly between hospitalized and non-hospitalized patients. Our study indicates that HGE infection with or without concomitant or previous Borrelia burgdorferi infection is common in tick-exposed individuals > 20 y old in the county of Funen, Denmark.

Adolescent↗

PubMed2003

Efficacy of selective antenatal screening for hepatitis B among pregnant women in Denmark: is selective screening still an acceptable strategy in a low-endemicity country?

The prevalence of hepatitis B virus (HBV) carriage in Denmark is unknown, but expected to be low (0.1%). This study aimed to evaluate the efficacy of selective antenatal screening for HBV infection and the epidemiology of HBV and hepatitis C virus (HCV) among pregnant women. 4098 women were included in the study. Blood tests were examined for hepatitis B surface antigen (HBsAg), anti-hepatitis B core antigen (HBc) and anti-HCV. Case records were studied to evaluate whether patients at risk for HBV infection had been tested. Among the 4098 women, 18 10.4%, 95% confidence interval (95% CI) 0.3-0.71 were HBsAg positive. All had a risk factor for HBV infection. Only 13 (72%) were identified as HBsAg positive in the selective screening programme. 115 women (2.8%, 95% CI 2.3-3.4) were anti-HBc positive only. 95 (83%) were at risk for HBV. Only 72 of these (63%) were tested for HBsAg. The screening programme in this area of Denmark did not pick up one-third of pregnant women at risk of HBV.

Adolescent↗

PubMed2003

Prevalence of drug resistance mutations and non-B subtypes in newly diagnosed HIV-1 patients in Denmark.

The aim of this study was to monitor the prevalence of drug resistance mutations in newly diagnosed HIV-1 positive individuals in Denmark. In addition we assessed the prevalence of non-B subtypes based on phylogenetic analysis of the pol gene. Plasma samples from 104 newly diagnosed HIV-1 positive patients were obtained in the year 2000. The entire protease gene and 320 amino acids of the reverse transcriptase gene were genotyped. Sequences were obtained from 97 patients. No subjects displayed primary resistance mutations in the protease gene, whereas all carried 1 or more secondary mutations. Resistance mutations in the RT-gene associated with NRTI-resistance were found in 1 patient, who was infected with zidovudine resistant HIV-1 harbouring the M41L mutation in combination with T215S and L210S. The T215S mutation has been showed to be associated with reversion of zidovudine resistance. The T215S mutation was found in 1 additional patient. The subtype distribution was subtype B 59%, C 18%, A 8%, CRF02_AG 5%, CRF01_AE 4%, D 3% and G 2%. We found 2 patients (2%) with mutations associated with resistance in the RT-gene and none in the protease gene indicating a low prevalence of resistant HIV-1 in Denmark in the year 2000.

Adolescent↗

PubMed2004

Serological and molecular evidence of Rickettsia helvetica in Denmark.

Recent seroepidemiological studies and examinations of Ixodes ricinus ticks in Europe have demonstrated the presence of an emerging tick-borne infection with Rickettsia helvetica. We conducted a serosurvey in 168 Danish patients seropositive for borreliosis reflecting their exposure to I. ricinus ticks. A total of 21 patients (12.5%) had positive antibody titres to R. helvetica including 4 cases of seroconversion. None of the samples were positive for antibodies to Ehrlichia. We conclude that in humans exposed to I. ricinus ticks in Denmark the risk of acquiring rickettsial infection is for the first time demonstrated. In the same region of Denmark we collected 570 I. ricinus ticks from various sources, and examinations by PCR for Rickettsia were performed. Positive reactions were obtained in 23 ticks (4%), and R. helvetica was identified in all 13 of those for which sequencing was performed.

Animals↗