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PubMed1976

Canine rabies in the United States, 1971-1973: study of reported cases with reference to vaccination history.

From 1971 through 1973 629 reported cases of rabies in dogs, concentrated in the Appalachian area, upper Mississippi drainage, Texas, and Louisiana, were reported in the US. States bordering the Atlantic and Pacific oceans had fewer cases. There was a recurring seasonal pattern of cases with a peak in March and April and a low point in August and September. Most of the cases involved transmission from wildlife vectors rather than dog-to-dog transmission. Most of the dogs were owned (87%), unvaccinated (87-90%), and adult (72%); most demonstrated unaggressive behavior (74%) and had exposed humans (75%). A history of vaccination was reported for 60 of the dogs. There were 21 cases of apparent vaccine failure involving all the types of vaccines in use during the study period. The attack rate for unvaccinated dogs was estimated to be 14 to 19 times higher than for vaccinated dogs. Since canine rabies in the United States is predominantly a problem in owned, invaccinated pets, vaccination and licensing of dogs should be mandatory. Surveillance should be continued to ensure that any resumption of dog-to-dog transmission will be rapidly detected and to monitor efficacy of vaccines in current use.

Animals↗

PubMed1976

The response to oral poliovaccine in persons aged 16-18 years.

Serum neutralizing antibodies to polioviruses were titrated in serum samples from 182 police cadets aged 16-18 years before and, in 168 of the cadets, 6 weeks after vaccination with a single dose of oral polio vaccine (OPV). Faecal excretion of poliovirus was also followed. Vaccination histories were obtained and confirmed whenever possible. Pre-vaccination antibody could not be detected against type 1 in 9-3% cadets, against type 2 in 2-7% and against type 3 in 7-7%. Absence of antibody to at least one virus type was found in 14-3% of the cadets. In 93 cadets in whom vaccination histories could be confirmed 40 had received only inactivated polio vaccine (IPV) previously; of these 23% lacked antibody to at least one virus type, and they had less intestinal immunity to a challenge dose of OPV than those previously given OPV. Only two of the cadets known to have had OPV were non-immune - both had received a single dose following full courses of IPV. However, cadets who had received OPV had their last dose of vaccine more recently (average 4-6 years) than those who had received only IPV (all 12 years or more). The serum antibody response to a single booster dose of OPV, and the faecal excretion of each type of virus after vaccination, showed an inverse relation to the corresponding pre-vaccination antibody concentration. A single dose of OPV did not reliably boost the immunity of those who possessed adequate immunity, and a failure to respond was also observed in a proportion of the cadets with no detectable antibody, mostly in the case of type 3 antibody and particularly if antibody to types 1 or 2 virus was also absent. No evidence was obtained that intestinal immunity could be expected in the absence of detectable circulating antibody. The reasons for the absence of a serological response to OPV in some subjects are discussed and consideration is given to the practical significance of the findings. It is suggested that reinforcement of polio immunity at school-leaving is important, particularly at the present time when many of those aged 16-18 years will have been vaccinated only with IPV. A single dose of OPV is not ideal for this purpose, not only because a small proportion of persons are liable to be left unprotected, but also because failure to produce a reliable boost in persons with adequate immunity at the time of vaccination gives rise to the possibility that they may become susceptible later in adult life.

Adolescent↗

PubMed2026

Simultaneous Administration of Human Papillomavirus (HPV) Vaccine With Other Recommended Vaccines Among Adolescents Aged 13-17 years, National Immunization Survey-Teen (NIS-Teen), United States, 2023.

PURPOSE: To investigate the percent of adolescents who receive human papillomavirus (HPV) vaccine with one or more other vaccines recommended for adolescents in a single medical visit. METHODS: Data from the 2023 National Immunization Survey-Teen were analyzed. Timing of receipt of HPV vaccine, tetanus, diphtheria, and acellular pertussis vaccine (Tdap), quadrivalent meningococcal conjugate vaccine (MenACWY), and influenza vaccine was assessed using provider-reported vaccination histories. RESULTS: In 2023, among adolescents aged 13-17 years, 69.5% received HPV vaccine with one or more other vaccines recommended for adolescents in a single medical visit. In addition, 47.8% received specifically HPV vaccine, Tdap, and MenACWY together in a single medical visit. DISCUSSION: The HPV vaccine is commonly given with other vaccines recommended for adolescents in a single medical visit. These findings demonstrate variation in simultaneous vaccination patterns, suggesting that flexibility in the recommended adolescent vaccination schedule allows for different approaches to vaccination across clinical settings and family preferences while maintaining adherence to the recommended schedule.

Humans↗

PubMed1979

Assessment of inactivated influenza-A vaccine after three outbreaks of influenza A at Christ's Hospital.

The boys of Christ's Hospital experienced outbreaks of influenza A in 1972 (A/England/42/72), in 1974 (A/Port Chalmers), and in 1976 (A/Victoria). In each outbreak, the protective effect of inactivated influenza-A vaccine was limited to those boys, not already immune, who were vaccinated for the first time with the most up-to-date strain. Revaccination with the same strain did not increase the degree of protection, and revaccination with a later strain did not afford protection against subsequent challenge. The cummulative attack-rate in the three outbreaks was similar in all groups irrespective of vaccination history. These observations suggest that annual revaccination with inactivated influenza-A vaccine confers no long-term advantage.

Adolescent↗

PubMed1979

Comparison of serological methods for the detection of B. abortus antibodies in sera from vaccinated and non-vaccinated cattle.

A total of 4551 sera from 863 Strain 19 vaccinated and non-vaccinated adult cattle, independent of disease status, were tested by five serological methods to detect the presence of antibodies to B. abortus. Results from Standard Agglutination Tube (SAT), Buffered Brucella Antigen or card (CT), Complement Fixation (CF), Enzyme Linked Immunosorbent Assay (ELISA) and Rivanol (Riv) methods were compared. There was a 95% probability for agreement among CT negative sera, between serological methods, for all groups of vaccinated and non-vaccinated cattle. The agreement between tests with Riv Positive sera, excluding the calfhood and adult vaccinated group tested by the CF method, was 91-100%. The probability of a serum which was serologically negative by other methods being Riv negative was 98%. The usefulness of serological results from Riv (greater than or equal to 1/50) tests for classifying the reactor status of cattle are of doubtful supplemental value to confirm card test positive results. Vaccination history is an important consideration when evaluating serological data on cattle sera particularly from SAT and CF methods.

Agglutination Tests↗

PubMed1975

Immunization interview survey in the Mongolian People's Republic.

An immunization interview survey was carried out in the urban and rural areas of Mongolia. The population sample interrogated comprised 1359 households with 6994 household members, 3634 of them younger than 15 years. The data collection unit was a private household, where information on administrative, demographic and socio-economic items was obtained in addition to detailed information on vaccination histories. A fair number of individuals with a positive history was found among children aged 1 to 5 years; the highest rates were determined among preschool and school-children aged 5 to 9. Significant differences in vaccination rates were found between urban and rural dwellers, urban areas displaying a higher proportion of vaccinated children in the younger age groups and rural areas among school-age children. A significantly higher proportion of vaccinated individuals was found among children living in somons than those living in aimac centres. No significant differences were found between children attending child collective institutions and those educated solely at home. The immunization interview survey was specially directed toward obtaining an estimate of the vaccinated population segment with reference to age in demarcated areas and thus detecting "weak spots" requiring remedial action.

Adolescent↗

PubMed1978

Comparison of a leucocyte adherence test with the leucocyte migration inhibition test and skin reactivity to PPD.

Using PPD as antigen, a leucocyte adherence test was compared with the leucocyte migration inhibition test and with the results of skin testing in healthy subjects. In the presence of antigen, leucocyte adherence was significantly greater in skin test-positive subjects than in skin test-negative subjects who had not previously had BCG vaccination. When the test was performed in heterologous serum, skin test-negative subjects who had had previous BCG vaccination showed significantly greater leucocyte adherence in the presence of antigen than skin test-negative subjects who had not had BCG vaccination; this difference was not present in autologous serum and its abolition was attributed to a serum blocking effect. The leucocyte adherence test correlated with the results of the leucocyte migration inhibition test in heterologous serum, and also with the results of skin testing interpreted in the light of previous vaccination history. The finding of increased rather than decreased adherence in the presence of antigen, although previously reported, is unusual.

BCG Vaccine↗

PubMed1979

Equine respiratory disease on the Western Canadian racetracks.

The serological results from this study clearly show that both equine influenza and equine rhinopneumonitis viruses were present during spring and autumn epidemics of respiratory disease on Western Canadian racetracks. Approximately 11% of the horses showed significant convalescent titres to influenza while 9% showed significant convalescent titres for equine viral pneumonitis. It was noted in our study a positive vaccination history corresponded with a reduction in the severity of the respiratory infection.

Animals↗

PubMed1979

Mono- and polyneuritis after tetanus vaccination (1970--1977).

Due to the similarity of symptoms, 22 cases of mono- and polyneuritis after tetanus vaccination from our own records covering the years 1970--1977, as well as 6 additional cases taken from existing literature, are being analyzed. As expected, the number of male vaccinees exceede that of female vaccinees, the former being younger than the latter and women generally received less previous tetanus vaccination than men. Three out of four cases occurred during the summer season. The interval between vaccination and the first symptoms was shorter in mononeuritis than in polyneuritis. The prognosis of most cases was benign, irrespective of age, sex and tetanus vaccination history. Cases with delayed recovery only occurred during the summer months. In cases of polyneuritis it seems that the longer the interval between vaccination and the first symptoms, the slower the recovery. It has to be emphasized that the discussed cases of neuritis have to be viewed as extremely rare complications due to tetanus vaccine.

Adult↗

PubMed1979

Correlation of in vitro and in vivo tests for cell-mediated immunity in the dog.

Using tuberculin (purified protein derivative) as the test antigen, 29 dogs with different vaccination histories were tested with the lymphocyte transformation (LT) assay, the indirect agarose leukocyte migration inhibition (LMI) assay, and the skin test for delayed type hypersensitivity. All three tests were done simultaneously on each dog. The LT assay results were found to correlate well (r = 0.88) with the skin test results, whereas LMI results were found to correlate poorly (r = 0.55) with the skin test results. It was concluded that the LT assay is a more reliable measure of cell mediated immunity in the dog than is the LMI assay.

Animals↗

PubMed1977