| [the post-licensing efficacy of va-mengoc-bc in children under 6 in holguín, cuba. the first year of observation]. | the assessment of the after-licensing efficacy of the cuban vaccine va-mengoc-bc was performed one year after the mass immunization campaign was completed in children under 6 years of age in the province of holguín which had the second highest incidence rate of meningococcal disease during 1988 in cuba. in the design of the study the following aspects were taking into account: case definition; case detection, determination of the state of vaccination, and comparability of exposure. the utilizati ... | 1995 | 9805070 |