[How protective is the immunization against viral hepatitis B prospectively? Seroprevalence study on viral hepatitis B infection].

Sero-epidemiological studies on herd immunity following the vaccination against hepatitis B virus may contribute to assess the needs and the optimal calendar of some booster vaccinations against hepatitis B. Such studies are quite uncommon. In order to evaluate the immune protection at community scale we performed a seroprevalence study using a sample of 360 volunteer subjects stratified in 9 groups of age.

[Serologic assessment of measles herd immunity in the north-western region of Romania].

The most objective analysis of measles herd immunity could be made by sero-epidemiological study. In the population of North-West area of Romania we have evaluated the measles immune protection through a seroprevalence study, using an age stratified sample of population in witch the subjects from Cluj and Bistriţa-Năsăud counties were voluntarily involved. The measles antibody concentration was determined by immunoassay method using Hycor test.

[Induced sputum--means for detecting bronchial inflammation in children with atopic bronchial asthma and treatment monitoring].

Induced sputum is a very recent technique for exploration of bronchial inflammation in asthma. Since 1992, it has significantly improved as a method and as clinical and fundamental research tool for asthma. It is currently recognized that this method is well tolerated and can be used in all asthma patients, except those with FEV1 less than 11.