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[Progressive retinal atrophy in Abyssinian and Somali cats in the Netherlands (1981-2001)].

From 1981 to 2001, 248 Abyssinian and 127 Somali cats in the Netherlands were examined for hereditary eye disease. Distinct ophthalmoscopic signs consistent with hereditary progressive retinal atrophy (PRA) were observed in 11 Abyssinian cats, and subtle signs in 3 Abyssinian cats. A familial relationship was detected in 13 out of 14 of these cats, which supports a hereditary basis to the condition. Distinct funduscopic signs of retinal degeneration were observed at a median age of 4 years. One cat with advanced retinal degeneration was only 7 months old, whereas the remaining 10 cats were between 2 and 12 years old at the time of diagnosis. These differences in the age of onset are suggestive of at least two types of PRA occurring in Abyssinian cats in the Netherlands: a dysplastic, early-onset and a late-onset retinal degeneration. A large-scale and systematic examination programme for hereditary eye disease will be necessary to assess the incidence of PRA in the Dutch population of Abyssinian and Somali cats as a whole, and to provide a basis for a preventive breeding programme.

Age of Onset↗

[Birth control in the Netherlands, 1982 and 1988].

Analysis of family planning and contraceptive use in the Netherlands for 1988 reveals that "a large share of the [female] population practices reliable methods of birth control. At young ages many girls already take the pill. As the rates of sexual intercourse by age do not differ very much from elsewhere in the western world...the Netherlands can also be characterized as a country with a very low incidence of teenage pregnancy and abortion. From the differential analysis it can be concluded that nonuse of birth control methods coincides with the absence of a male partner. Women with a partner, depending on the completeness of their family, use very reliable methods (pill, IUD, condom or sterilization)." Statistical information on the use of various methods is also presented. (SUMMARY IN ENG)

Abortion, Induced↗

[Population forecasts for the Netherlands during the 1980s: how far were they wrong?].

An evaluation of the accuracy of the seven national population forecasts produced by the Netherlands Central Bureau of Statistics during the 1980s is presented. "Compared with the eight national forecasts made in the preceding three decades those of the 1980s were more successful. The number of live births in particular was forecasted better in the last decade. Regarding fertility of subsequent generations of women it was rightly assumed that: the numbers of children would decrease, [and] the ages at which women have their children would increase. Other assumptions made during the 1980s that turned out to be right were: increasing life expectancy at birth with a stable difference of about 6.5 years between the expectations for men and those for women, [and] continuing net immigration into the Netherlands." (SUMMARY IN ENG)

Age Factors↗

[Turkish and Moroccan persons and families in the Netherlands, January 1, 1992].

The authors examine data on Turkish and Moroccan migrants in the Netherlands. "On 1 January 1992 159 thousand persons born in Turkey and 131 thousand persons born in Morocco lived in the Netherlands....The second generation amounted [to] 141 thousand persons with at least one parent born in Turkey and 115 thousand persons with at least one parent born in Morocco. Of 90% of both second generations both parents were born in Turkey or Morocco." (SUMMARY IN ENG)

Demography↗

[Multiple births in the Netherlands, 1900-1993].

Data on multiple births in the Netherlands since 1900 are examined. It is noted that "since 1975 the number of multiple births is increasing rather strongly, partly under the influence of the application of modern medical technology (e.g. hormone treatment) to infertility problems...." Age distribution by sex among paternal and fraternal twins living in the Netherlands is also discussed. (SUMMARY IN ENG)

Age Distribution↗

[Moslems and Hindus in the Netherlands: revised time series].

Estimates of the numbers of Muslim, Hindu, and Buddhist residents of the Netherlands are presented and techniques for producing such estimates described. "Since 1971...estimated numbers of Moslems and Hindus/Buddhists have been...computed annually with the aid of data taken from the international migration statistics. Population growth due to births and deaths was calculated by assuming that the crude rates for Turks, Moroccans, [Tunisians], Pakistani and Indonesians living in the Netherlands apply to the Moslems, and those for the Surinamese apply to the Hindus/Buddhists. More recently other estimates have been achieved on the basis of enumerations from municipal population registers." (SUMMARY IN ENG)

Culture↗

[Less aging in the Netherlands than in other Western European countries].

"The percentage of the population aged 65 or over in the Netherlands is currently lower than in all other member states of the European Union, with the exception of Ireland. The relatively low percentage of persons aged 65 or over can be explained by the fact that the post-war baby boom continued longer in the Netherlands than in most other countries. According to the new population scenarios for the European Union...the percentage of the Dutch population aged 65 or over will remain below the average for the European Union during the next half century." (SUMMARY IN ENG)

Adult↗

[Mortality in the Netherlands population forecasts].

Trends in life expectancy in the Netherlands are reviewed, using mortality data from the 1992 official Netherlands population forecasts. Data are presented by age and sex. "A main conclusion is that mortality in recent years has developed more favourably for men than for women." (SUMMARY IN ENG)

Age Factors↗

The delayed transition from folk to labor migration: the Netherlands, 1880-1920.

"This article analyzes Netherlands government statistics on overseas emigration, 1880-1920, which reveal that the process of industrialization caused a major social structural shift in the 1890s. A system of urban labor migration replaced the traditional rural folk movement and the primary destination shifted away from the United States to Dutch colonies in Asia and South America. The Netherlands belatedly 'caught up' with the rest of Western Europe in the shift from family to industrial overseas emigrants."

Demography↗

[Aliens in the Netherlands on January 1, 1990].

Data on the foreign-born population living in the Netherlands are presented and analyzed. "On January 1st 1990 there were 641 thousand aliens living in the Netherlands, i.e. 4.3% of the total population. These figures only relate to people included in Dutch municipal population registers who do not possess... Dutch nationality.... The largest category of aliens on January 1st 1990 was that of the Turks (185 thousand), followed by the 11 EC-nationalities (160 thousand) and... Moroccans (144 thousand)." (SUMMARY IN ENG)

Demography↗

Income distributions in an international perspective--the case of Hungary and the Netherlands.

"This article describes the comparison of the income distributions of Hungary and the Netherlands. In this comparison harmonised micro-data have been used to reach a high degree of comparability. The empirical results show that the inequality of household incomes was the same in both countries in the early eighties. After adjustments for differences in size and composition of households the income distribution was less equal in the Netherlands than in Hungary. The equivalence scales used were based on national budget surveys."

Developed Countries↗

Mortality by social class among males in the Netherlands since the nineteenth century.

"In this paper socio-economic differential mortality [in the Netherlands] at the individual level will be analyzed by two national and two local surveys. The purpose is to describe socio-economic differential mortality in several periods....[It is found that] mortality by social classes among males was higher among lower classes in the Netherlands in 1896-1903. The gradient...disappeared in 1947-1952. There was...socio-economic differential mortality again in 1959-1961 and 1972-1981." (SUMMARY IN ITA)

Cohort Studies↗

[How many people with a foreign background live in the Netherlands?].

"The number of people with a foreign background living in the Netherlands can be assessed on the basis of country of birth and the parents' country of birth. If every person born abroad and every person of whom at least one parent is born abroad is included, the number of foreigners amounted to 2.4 million on 1 January 1992 (wide definition).... If only people born abroad with a least one parent born abroad and people born in the Netherlands with both parents born abroad are included, the number of foreigners reduces to 1.4 million (narrow definition). If, moreover, people with a background of one of the rich OECD-countries are not included, the number reduces further to 1.2 million." (SUMMARY IN ENG)

Demography↗

[Some figures for the year 1974 concerning mastitis of cattle in the Netherlands (author's transl)].

With the co-operation of the industry, information has been received for 1974, just as for the years 1971 to 1973, about the number of short-acting and long-acting injectors sold in the Netherlands. This reveals that the sales of short-acting injectors have in 1974 shown practically no change (-0.7 per cent). The use of long-acting preparations shows a clear rise in 1974, in comparison with 1973, namely 16 per cent. This is a favourable trend. The total losses caused in 1974 by mastitis have not changed in comparison with 1973. The individual stock farmer has little idea of the losses suffered by him on account of mastitis. The estimated total damage as a result of lost milk production in the Netherlands is about 100 million guilders a year. The damage due to premature culling occasioned by mastitis of cows runs at about 50 million guilders a year. All in all this represents damages of 75 guilders annually for every dairy cow and every cow in calf. It is imperative that this is realised by all bodies concerned with dairying in the widest sense of the world.

Abortion, Veterinary↗

[Centenary of the Health Council of the Netherlands. IV. Infectious diseases].

Many advisory reports of the Health Council of the Netherlands in the past century have dealt, directly or indirectly, with infectious diseases. One example is vaccination against smallpox. At the start of the last century, advice on this subject was important: initially, vaccination was compulsory by law, but people became increasingly aware of the associated side effects. A second example is immunisation against acute anterior poliomyelitis, which became a reality during the fifties. The advice also contained a discussion of which vaccine should be chosen: the inactivated 'dead' (Salk) form or the attenuated 'live' form (Sabin). Due to sound national organisation and associated logistics, a high level of vaccination was (and still is) achieved and the clinical disease known as polio disappeared from the Netherlands. Food-borne infections form the third example. The effect of the advice published by the Council on this subject (from 1960 onwards) has been limited, for a large part due to the significant economic consequences of the proposals for beef farming. The developments in the field of infectious diseases, immunology and vaccinology, together with social developments make it likely that in the coming years the Council will also frequently be asked for advice in the field of infectious diseases and the fight against them.

Communicable Disease Control↗

Pesticide residues in human food and wildlife in The Netherlands.

Several monitoring programmes for pesticide residues in food are currently operative in the Netherlands, some of which are related to EU directives. These programmes cover a range of products. This paper reviews the 1997 and 1998 data for fruit and vegetables, meat, milk, livestock and fish, as well as presenting data on pesticide residues in wildlife. The aim of the paper is to provide an overview of what is known about pesticide residues in the Netherlands, including indications of the origins of the compounds found. A total of 281 different compounds were monitored on fruit and vegetables. Of these compounds, 45% were actually found on products and 28% exceeded the standard. Expressed as percentages of the number of measurements, the data show that 0.3% of the measurements detected a compound, and standards were exceeded in 0.02% of the measurements. Some of the cases in which standards were exceeded concerned the use of compounds in minor crops, for which their use is not permitted. Other cases involved excessive dosages or application within the safety interval before harvest. In meat, milk and livestock, 10 persistent organochlorine compounds were measured. Most of these compounds, with the exception of lindane, are no longer in use, but are still being found as residues. The concentrations found were very low and have not exceeded standards for human consumption since 1993. No assessment was made, however, of products currently in use. Organochlorine compounds have also frequently been found in fish (eel), in higher concentrations than in meat, but in nearly all cases in quantities below the standards for human consumption. Ecological standards for accumulation in the food chain were exceeded on a larger scale and indications of exposure effects on piscivorous birds (cormorants) were found. No data on pesticide residues in wildlife are known for terrestrial organisms.

Animals↗

Trends of pesticide use in The Netherlands.

In 1991, a policy plan was adopted in the Netherlands, one of whose aims was a 50% reduction in pesticide use by 2000. The present paper surveys pesticide sales since 1974 and the use of such compounds in different crops per hectare as well as for the country as a whole. The results show that by the mid-1990s, pesticide consumption in kilogram terms had been reduced by about 50% compared to the mid-1980s. This reduction, however, was almost totally caused by the reduction in the use of soil disinfectants, while reduction targets for herbicides and fungicides were not met at all. Arable crops, especially potatoes and maize, which cover large areas in the Netherlands, contributed most to total consumption, while apples, tulips and lilies also made considerable contributions. On a per hectare per year basis, pesticide consumption was highest in ornamental plants like roses, chrysanthemums, lilies and hyacinths, followed by vegetables grown in greenhouses, apples and pears and mushroom cultivation. A remarkable feature is that the majority of the 20 most commonly used compounds (in terms of total consumption in kilograms of active ingredient or area sprayed) had already been introduced before 1980. On a kilogram basis, fungicides and soil disinfectants were used in the largest quantities, together with mineral oil and followed by herbicides. On a per hectare basis, herbicides played a more important role, while one insecticide also featured.

Agriculture↗

[Epidemic of methicillin-resistant Staphylococcus aureus due to the transfer of 2 Dutch burn patients from a hospital outside of the Netherlands; who suffers the consequences?].

Two burns patients who were transferred to the Central Military Hospital Utrecht from a foreign hospital, were found to be colonised with MRSA. During their 5-week hospitalisation, 21 healthcare workers and one patient became colonised with the same MRSA strain, despite isolation precautions. The department was closed for 29 days; 96 admissions were cancelled and 1411 screening cultures for MRSA were performed. Colonised healthcare workers were temporarily unable to work and additional costs were incurred for disposables and cleaning procedures. The resultant bill for this outbreak was approximately [symbol: see text] 122,500. MRSA outbreaks occur in hospitals with some degree of regularity, but the strong dispersal during this epidemic was exceptional. The transfer of possible MRSA-colonised patients from hospitals outside of the Netherlands sometimes faces opposition due to the considerable demands it makes on a hospital's personnel, organisation and finances. If this were to be compensated, then the currently successful Dutch MRSA policy could be coupled with a willingness to accept patients from hospitals outside of the Netherlands.

Burns↗