Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “VACCINATION”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 235 records · Page 13Linked to original sources
PubMed2000

Immunogenicity and safety of monovalent p1.7(h),4 meningococcal outer membrane vesicle vaccine in toddlers: comparison of two vaccination schedules and two vaccine formulations.

The safety and immunogenicity of two PorA-based meningococcal outer membrane vesicle (OMV) vaccines against the P1.4 serosubtype adsorbed with AlPO(4) or Al(OH)(3) were studied in 134 toddlers. Vaccinations were given three times with an interval of 3-6 weeks or twice with an interval of 6-10 weeks. A vaccination was repeated after 20-40 weeks. Pre- and post-immunization sera were tested for bactericidal activity against an isogenic strain expressing P1.7(h), 4 PorA. Both meningococcal OMV vaccines were well tolerated. The percentage of children with a fourfold increase in bactericidal activity was 96% (AlPO(4)-adjuvated vaccine/2+1 schedule), 100% (AlPO(4)-adjuvated vaccine/3+1 schedule), 93% (Al(OH)(3)-adjuvated vaccine/2+1 schedule) and 97% (Al(OH)(3)-adjuvated vaccine/3+1 schedule). Adsorption with AlPO(4) makes the OMV vaccine more immunogenic than adsorption with Al(OH)(3). Bactericidal activity was highest after the 3+1 schedule, although the response shortly after the primary series was higher in the two-dose priming group.

Adjuvants, Immunologic↗
PubMed1998

Hepatitis B third-generation vaccines: improved response and conventional vaccine non-response--third generation pre-S/S vaccines overcome non-response.

A new triple-S containing recombinant hepatitis B vaccine was evaluated in terms of immunogenicity and reactogenicity in a cohort of healthy healthcare professionals who were persistent non-responders to the currently licensed hepatitis B vaccines. One hundred subjects were allocated randomly to receive two doses of 5, 10, 20 or 40 micrograms of a new hepatitis B vaccine 2 months apart. The overall seroconversion rate was 70% with a single dose of 20 micrograms of the vaccine being as effective as two doses of either 20 micrograms or 40 micrograms of the vaccine formulation in terms of seroconversion, seroprotection and geometric mean titres.

Cohort Studies↗
PubMedDate not supplied

Antibody levels in Ethiopian children five years after vaccination with two different doses of hepatitis B vaccine: is there a need for booster vaccine?

It was hypothesized that, following effective initial vaccination, a booster dose of hepatitis B vaccine will not be necessary in areas of hyperendemicity for hepatitis B virus (HBV) infection. A total of 314 Ethiopian children, ranging from two to 14 years old, were alternatively vaccinated with 10 and 20 micrograms hepatitis B vaccine doses, using the initial, one- and six-month schedule. Five years later, 210 of the vaccinees were retested for anti-HBV surface antibody titres. Both 10 and 20 micrograms doses of hepatitis B rDNA yeast vaccine were equally immunogenic and protective against HBV infection for at least five years despite marked reduction of mean antibody levels and geometric mean titres, with 11% of the vaccinees showing antibodies below the protective level. For firm further recommendations a longer follow-up period of vaccinees is suggested.

Adolescent↗
PubMed2004

Immunological evaluation of vaccination with pre-designated peptides frequently selected as vaccine candidates in an individualized peptide vaccination regimen.

We previously conducted a trial of an 'individualized' regimen, in which cancer patients were vaccinated with peptides after the confirmation of pre-existing peptide-specific cytotoxic T lymphocyte (CTL) precursors. In this study, we performed a new trial of 'pre-designated' regimen, in which cancer patients were vaccinated with peptides that were frequently selected as vaccine candidates in the preceding individualized regimen. Eighteen cancer patients (10 with uterine cervical cancer and 8 with gastric cancer) were enrolled in the new regimen. The pre-designated regimen was well tolerated by all patients. Although peptide-specific CTL precursors and humoral responses increased in the majority of patients with the pre-designated regimen, neither of the responses correlated with clinical outcome. Three patients had long stable disease, and their pre-vaccination peripheral blood mononuclear cells contained peptide-specific CTL precursors reactive to more than 2 of 4 peptides. With the pre-designated regimen, the levels of pre-existing immunoglobulin G reactive to non-vaccinated peptides decreased in 5 of 15 patients with progressive disease, and their time to progression was very short, whereas such a decrease was rarely observed in the preceding individualized regimen. These results suggest that the pre-designated regimen can elicit a primary immune response, but may incidentally suppress pre-existing immune responses.

Adult↗
PubMed1982

Intradermal immunization with human diploid cell rabies vaccine. Serological and clinical responses of persons with and without prior vaccination with duck embryo vaccine.

Intradermal administration of human diploid cell rabies vaccine (HDCV) was investigated in an attempt to reduce the current high cost of preexposure rabies prophylaxis. The study population consisted of 240 volunteers from a veterinary hospital, 165 of whom had prior vaccination with duck embryo rabies vaccine (DEV). Vaccine safety was good; only minor reactions were experienced, all of which resolved spontaneously. Serological responses to intradermal HDCV were excellent; 209 (99.5%) of the 210 persons who completed the study produced rabies antibody titers of 0.50 lU/mL or greater (range, 0.50 to 40.00 lU/mL). Two 0.1-mL doses of HDCV given intradermally 28 days apart provide a safe, effective, and economical method for human preexposure prophylaxis against rabies, irrespective of the previous DEV vaccination history of the recipient.

Animals↗
PubMed1996

Evaluation of live attenuated influenza vaccines in children 6-18 months of age: safety, immunogenicity, and efficacy. National Institute of Allergy and Infectious Diseases, Vaccine and Treatment Evaluation Program and the Wyeth-Ayerst ca Influenza Vaccine Investigators Group.

Live attenuated, cold-adapted (ca) monovalent and bivalent influenza A vaccines were evaluated in seronegative infants (ages 6-18 months) in a double-blind placebo-controlled trial to assess safety and immunogenicity. A total of 182 seronegative subjects received a single intranasal dose (10(6.2) TCID50) of ca A/Kawasaki/9/86 (H1N1) or ca A/Los Angeles/2/87 (H3N2), both as a bivalent vaccine, or placebo. Respiratory and systemic symptoms did not differ between groups after vaccination. Hemagglutination antibody seroconversions (> or = 1:8) to H3N2 exceeded 90%. In contrast, seroconversions to A/Kawasaki/9/86 (H1N1) were significantly less frequent in bivalent ca vaccine recipients (31%) than in monovalent ca H1N1 recipients (83%) (P < .002). During a subsequent H3N2 epidemic, nasal washes were cultured for viruses from any subject with respiratory illness. H3N2 infections documented by virus isolation were reduced by 65% in ca H3N2 recipients compared with placebo or ca HIM recipients (P = .01).

Adaptation, Physiological↗
PubMed1995

Successful vaccination with intradermal hepatitis B vaccine in hemodialysis patients previously nonresponsive to intramuscular hepatitis B vaccine.

Seventy-seven chronic hemodialysis patients were vaccinated against hepatitis B virus with an intramuscular (im) hepatitis B vaccine (HBV), 40 micrograms at 0, 1, 2, and 6 months. Fifty-seven patients (74%) developed antibodies (anti-HBs). The im-responsive patients were significantly younger than the nonresponsive patients (P < 0.05). Nineteen of the 20 im nonresponders received HBV intradermally (id), 5 micrograms every 2 wk until anti-HBs developed; the 20th patient died before receiving the id vaccine. Three patients were lost to follow-up. Fifteen (94%) of the 16 developed anti-HBs after 5.2 +/- 4.7 months. The peak anti-HBs titers were 726 +/- 426 (im) and 211 +/- 260 (id) IU/L (P < 0.05). Twelve (21%) of the 57 im-responsive patients and 8 (53%) of the 15 id-responsive patients had anti-HBs less than 20 IU/L at 18 and 8 months postvaccination, respectively (P < 0.05). Further preliminary data indicate that more prolonged id vaccination can increase both the titer and the duration of anti-HBs in im-nonresponsive patients.

Adult↗
PubMed1990

The humoral immune response to type 1 oral poliovirus vaccine in children previously immunized with enhanced potency inactivated poliovirus vaccine or live oral poliovirus vaccine.

Sixty-one children who had previously received three doses of enhanced potency inactivated poliovirus vaccine (epIPV) at 2, 4, and 18 months of age and 56 children who had previously received oral poliovirus vaccine (OPV) according to the same schedule were challenged with a single dose of monovalent, type 1 oral poliovirus vaccine (OPV1) between 19 and 52 months of age. Before the OPV1 challenge, the previously epIPV-immunized recipients had a geometric mean poliovirus type 1 microneutralization antibody titer (geometric mean titer [GMT]) of 11.1 IU, which was significantly higher than the prechallenge GMT of 2.2 IU among the children who had previously received OPV. Three weeks after the OPV1 challenge, the GMTs for the epIPV-immunized recipients and the OPV-immunized recipients were 35.3 IU and 5.1 IU, respectively. For the epIPV-immunized recipients, both the prechallenge GMT and the postchallenge GMT were dependent on the D antigen content of the vaccine that they had previously received. A fourfold or greater rise in poliovirus type 1 antibody occurred after the OPV1 challenge in 50.9% of the epIPV-immunized children and in 28.6% of the OPV-immunized children; this difference was statistically significant. For both groups, antibody boosts were inversely correlated with the pre-challenge serum antibody titer. However, the epIPV-immunized children consistently were more likely to boost than the OPV-immunized children at equivalent levels of prechallenge antibody. This experience indicated that OPV1 administration effectively raises the level of serum antibody in children previously immunized with three doses of epIPV, especially in children with lower levels of preexisting antibody. This booster response was superior to the booster response of children who received three doses of OPV.

Antibodies, Viral↗
PubMed2004

Poliovirus vaccine strains as mucosal vaccine vectors and their potential use to develop an AIDS vaccine.

Sexual transmission is the major route for the spread of the human immunodeficiency virus (HIV) in the AIDS pandemic progression. Most attempts to develop a protective HIV vaccine have failed despite eliciting strong systemic immune responses. The basic hypothesis of our poliovirus vaccine vector strategy is that essential requirements for protective immunization against HIV and other related lentiviruses may involve (1) induction of mucosal immunity and (2) immunological responses against multiple viral antigens. To test this hypothesis, we have developed replication-competent poliovirus recombinants, based on the Sabin poliovirus vaccine strain viruses, that carry and express antigens derived from the simian immunodeficiency virus (SIV). Because there are no good immunological correlates for complete protection against SIV infection, we have elected to express the entire SIV genome in defined, discrete overlapping fragments. With this approach all the potentially important antigenic sequences can be effectively expressed at local mucosal sites by the inoculation of a cocktail of recombinant polioviruses that carries a complete set of SIV antigens. Infection of susceptible mice and cynomolgus monkeys with poliovirus-SIV cocktails elicits serum and secretory humoral responses, as well as a strong cellular immunity to the inserted sequences. Most importantly, we have demonstrated that vaccination of cynomolgus monkeys with poliovirus-SIV cocktails protects against infection and AIDS after intravaginal challenge with highly pathogenic SIV(mac)251.

AIDS Vaccines↗
PubMed2000

Salivary antibody response to vaccination with meningococcal A/C polysaccharide vaccine in previously vaccinated and unvaccinated Gambian children.

Development of salivary antibodies at the age of 4 or 5 years to group A and C meningococcal polysaccharides (MenA/C PS) was studied among Gambian children, who had received MenA/C conjugate or PS vaccine in infancy. There was also a control group of 64 age matched children. IgG, IgA, and secretory Ig concentrations were measured by enzyme immuno assay. MenA/C PS vaccine induced antibodies both in previously vaccinated and unvaccinated children. The previous vaccination had not induced long lasting IgA-mediated memory. IgA antibodies were secretory, and most of IgG was serum derived. The IgG salivary response seen was similar to the serum response.

Antibodies, Bacterial↗
PubMed2003

Smallpox vaccination: a review, part I. Background, vaccination technique, normal vaccination and revaccination, and expected normal reactions.

Because smallpox could be a factor in bioterrorism, the United States has provided guidelines for smallpox vaccination of certain members of the population, including health care workers and first responders, as well as military personnel. A plan for more extensive vaccination, if it is needed in the event of a bioterrorist attack, is being developed under the aegis of the Centers for Disease Control and Prevention. The characteristics of smallpox vaccine, the technique of administration, and the expected reactions to primary vaccination and revaccination are outlined in this article.

Bioterrorism↗
PubMed1981

Immune response to Newcastle disease virus vaccine, fowl-pox vaccine, and Escherichia coli vaccine in Bedouin and White Leghorn chickens.

Immune response to Newcastle disease virus (NDV) vaccine, fowl pox, and E. coli vaccine was compared in the native Bedouin fowl of the Sinai desert, in a commercial Leghorn layer strain, and in the reciprocal crosses between them. Differences were not found in antibody titer levels to attenuated or inactivated NDV vaccines, in the proportion of birds showing post-vaccination immunity to fowl pox, or in the kinetics of postvaccination NDV titer levels. Rate of development of titer to Escherichia coli from day 1 to day 4, however, was significantly more rapid in Bedouin chicks than in the purebred Leghorn or the reciprocal crosses.

Animals↗
PubMed1995

[Vaccinations for travelers in Germany--1971-1990 adverse vaccine effects caused by travel vaccinations].

Adequate prophylaxis should always be the order of the day if anyone plans to visit a foreign country where he may be at risk of being exposed to infectious diseases. Numerous protective vaccinations are available for this purpose in Germany. Basing on the incidence of recorded damage caused by such vaccinations 1971-1990 we must conclude that the risk of damage to health as a result of such vaccinations is very remote. Hence, the protective vaccinations carried out in Germany are of vital importance in respect of keeping down the number of infections.

Communicable Disease Control↗
PubMed2000

Counterpoint. Cancer vaccines: single-epitope anti-idiotype vaccine versus multiple-epitope antigen vaccine.

Anti-idiotype (Id) vaccine therapy has been tested and shown to be effective, in several animal models, for triggering the immune system to induce specific and protective immunity against bacterial, viral and parasitic infections. The administration of anti-Id antibodies as surrogate tumor-associated antigens (TAA) also represents another potential application of the concept of the Id network. Limited experience in human trials using anti-Id to stimulate immunity against tumors has shown promising results. In this "counter-point" article, we discuss our own findings showing the potential of anti-Id antibody vaccines to be novel therapeutic approaches to various human cancers and also discuss where anti-Id vaccines may perform better than traditional multiple-epitope antigen vaccines.

Adjuvants, Immunologic↗
PubMed1994

Trials of Edmonston-Zagreb measles vaccine in Guinea-Bissau: serological responses following vaccination with Edmonston-Zagreb strain at 4-8 months versus vaccination with Schwarz strain at 9-12 months of age.

In two trials of measles vaccination in Guinea-Bissau, children were randomized to receive either the Edmonston-Zagreb (EZ) virus at age 4-8 months or, as a control group, a standard dose (5000 p.f.u.) of the Schwarz (SW) virus at 9-12 months. In the first trial a medium dose of EZ virus (40,000 p.f.u.) was used and in the later trial a high dose (150,000 p.f.u.). Pre- and postvaccination blood samples were analysed with a haemagglutination inhibition (HAI) test and an enzyme-linked immunosorbent assay (ELISA). For the ELISA the blood samples were collected on filter paper. Of 362 prevaccination specimens, 18 and 55%, respectively, were positive in the ELISA and HAI tests. At 18-20 months, the children who had received the EZ vaccine had a seropositivity of 91% by the ELISA method and one of 89% by the HAI method. The equivalent values for the SW group of children were 100 and 96% respectively. Antibody levels in the EZ group, as measured by either method, were significantly lower than the levels in the SW group. The serological results of the present study suggest that lowering the age at measles vaccination to below 9 months is feasible. However, further studies are needed to determine which virus strain, dosage and age at vaccination will prove to be optimal in countries where severe measles is common before the age of 9 months.

Antibodies, Viral↗
PubMed2006

Rabies post-exposure prophylaxis vaccination with purified chick embryo cell vaccine (PCECV) and purified Vero cell rabies vaccine (PVRV) in a four-site intradermal schedule (4-0-2-0-1-1): an immunogenic, cost-effective and practical regimen.

Currently, two intradermal (ID) regimens for rabies post-exposure prophylaxis (PEP) are recommended by WHO and used in countries where approved by national authorities: the Thai Red Cross (TRC) two-site ID regimen and the eight-site ID regimen. Besides these WHO recommended schedules, a new economical four-site ID regimen was evaluated that reduces the cost of PEP by up to 80%, when compared with the standard intramuscular Essen regimen, reduces the number of visits required for the patients when compared with the TRC regimen, and is more convenient than the eight-site regimen. To determine the immunogenicity of the ID four-site PEP regimen (4-0-2-0-1-1), 180 healthy volunteers were randomized to receive 0.1 mL volumes of PCECV or PVRV administered ID over both left and right shoulders and both deltoid regions on day 0, both deltoid regions on day 7 and over one deltoid region on days 30 and 90. Regardless of the vaccine, every subject developed rabies virus neutralizing antibody (RVNA) titers above 0.5 IU/mL by day 14, as determined by rapid fluorescent focus inhibition test (RFFIT) using a homologous test system. Two weeks after the last dose of vaccine, RVNA titers were all above 0.5 IU/mL (day 104). Geometric mean titers were similar throughout the study period. Both vaccines were well tolerated. These results demonstrate that a new four-site ID PEP regimen is a cost-effective and convenient alternative to IM (Essen or Zagreb) or ID (TRC or eight-site) regimens, especially using a 1 mL vial of vaccine (PCECV).

Adolescent↗
PubMed2001

Persistence of vaccine-derived poliovirus following a mass vaccination campaign in Cuba: implications for stopping polio vaccination after global eradication.

BACKGROUND: With substantial progress made toward polio eradication, developing the appropriate strategy for discontinuing global oral poliovirus vaccine (OPV) after global eradication becomes increasingly important. At issue is the theoretical risk of independent circulation of potentially virulent OPV-derived strains. Because Cuba uses OPV only in mass campaigns, it represents an ideal site to assess vaccine-derived poliovirus persistence. METHODS: Infants born after the 1997 biannual mass campaigns were evaluated for past (neutralizing antibody) or current (virus excretion) evidence of vaccine-derived poliovirus exposure. We obtained sera and/or stool specimens from 861 infants; a second serum from 218 infants. RESULTS: All stool specimens were poliovirus negative. Of 762 infants, 113 (14.8%) had initially detectable poliovirus type 1 antibody, 193 (25.3%) type 2, and 94 (12.3%) type 3. A precipitous antibody decline occurred in initially positive sera. CONCLUSIONS: Our results suggest that in a country with high population immunity, vaccine-derived virus is unlikely to establish ongoing circulation.

Cuba↗
PubMed1977

Vaccination of calves against Taenia saginata infection using antigens collected during in vitro cultivation of larvae: passive protection via colostrum from vaccinated cows and vaccination of calves protected by maternal antibody.

Six-to-11-day-old calves which received colostrum from cows vaccinated with in vitro culture antigens of Taenia saginata during their last month of pregnancy showed a high level of resistance to a challenge infection with T saginata eggs. Although colostral antibody reduced the numbers of larvae which became established it did not promote destruction of those which had undergone development. Calves which had received colostrum from vaccinated dams were themselves vaccinated with culture antigen when they were eight to 10 weeks old. These calves showed strong immunity to a challenge infection of T saginata eggs administered four weeks after vaccination.

Animals↗