[BCG vaccination--controversy and compromise].

Area of Science:

• Public Health
• Infectious Disease Epidemiology
• Vaccinology

Context:

• Sweden's low tuberculosis (TB) incidence necessitates targeted BCG vaccination strategies.
• Key target groups include children from high-endemic areas and healthcare personnel in at-risk settings.
• Current vaccination practices are sometimes influenced by parental concerns rather than clear medical indications.

Purpose:

• To outline the current recommendations and rationale for BCG vaccination in Sweden.
• To review the efficacy and limitations of BCG vaccination in the Swedish context.
• To address the implications of potential changes in TB epidemiology, such as increased refugee influx.

Summary:

• BCG vaccination is recommended for specific risk groups in Sweden, with early studies indicating approximately 80% efficacy against disseminated TB.
• The vaccine is effective in preventing disseminated disease but not localized pulmonary TB; revaccination is not supported by current data.
• The low risk of TB infection in Sweden is primarily confined to close contacts, though vigilance is required regarding potential epidemiological shifts.

Impact:

• Informs public health policy regarding optimal BCG vaccination strategies in low-incidence countries.
• Provides evidence-based guidance on vaccination indications and the limitations of BCG.
• Highlights the need for ongoing epidemiological surveillance, particularly in response to global health events and migration.