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At least 271 records · Page 15Linked to original sources
PubMed2005

Evaluation of a hepatitis A immunization program.

BACKGROUND: The purpose of this study was to evaluate the effectiveness of a hepatitis A vaccine requirement targeted at child-care center attendees 2-5 years of age in Maricopa County, AZ. A case-control study conducted before implementation in 1997 found that individuals with hepatitis A were 6 times more likely to have worked in or attended a child-care center than were matched controls, and 40% of hepatitis A cases were attributable to attending or working in a child-care center. METHODS: A case-control study was conducted postimplementation in 1999. Cases were individuals reported to surveillance staff between August 1, 1999 and April 30, 2000. Cases were included if they met the Centers for Disease Control and Prevention hepatitis A surveillance case definition. Each case (n = 72) was matched to 2 controls (n = 144) based on age and neighborhood. RESULTS: Cases were more likely to have had contact with a hepatitis A case [odds ratio (OR), 7.04; 95% confidence interval (CI), 1.96, 25.31] than were their matched controls in the unadjusted analysis. Individuals with direct contact with a child-care center (OR 0.221; CI 0.05, 0.99) were protected against disease. In the multivariate analysis, contact with a hepatitis A case (OR 5.63; CI 1.22, 25.91) was significantly associated with disease, and the protective effect of education (OR 0.19; CI 0.06, 0.60) remained significant. CONCLUSION: The results of this study suggest the vaccination requirement had some impact on the epidemiology of hepatitis A in Maricopa County. The risk associated with child-care centers seen in the 1997 study is no longer significantly associated with hepatitis A disease.

Arizona↗
PubMed1980

Fatal Guillain-Barré syndrome after the national influenza immunization program.

Fifty-eight fatal cases of Guillain-Barré syndrome (GBS) were reported during the 1976 to 1977 National Influenza Program: Thirty-two (58%) of these patients had received the A/New Jersey influenza vaccine. The mean interval from vaccination to onset was 3.9 weeks, and the incidence of preceding illness in vaccinated or unvaccinated patients was similar. Fifty-eight percent had at least one chronic disease before onset. The clinical features were similar in vaccinated and unvaccinated patients. Most deaths followed medical complications of respiratory paralysis: Fifteen had pneumonia, 29 (83%) died suddenly, 15 had sudden arrhythmias or hypotension, and 7 had myocardial infarction or pulmonary embolus.

Adolescent↗
PubMed1983

Risk of pregnancy among adolescent schoolgirls participating in a measles mass immunization program.

A large measles vaccination program in the Albuquerque, New Mexico public schools in 1981, conducted according to US Public Health Service guidelines, was studied to determine rates of pregnancy among adolescent vaccinees. Pre-vaccination counseling of 1,922 clinic attendees prevented seven pregnant girls from being vaccinated. Despite counseling, of 1,913 female vaccinees age 13-18 years old, two were pregnant at the time of vaccination (1.05 pregnancies per 1,000 vaccinees) and an additional four girls became pregnant in the three months after vaccination (2.1 pregnancies per 1,000 vaccinees). Data supporting low or absent fetal risks from measles and rubella vaccine, combined with the low pregnancy rate among vaccinees documented in this study, support the reasonableness of the recommended strategy for measles and rubella vaccination of secondary schoolgirls.

Adolescent↗