What is a ring vaccination strategy?
Quick Answer
Ring vaccination is when health workers vaccinate people around a detected case to stop an outbreak from spreading. It creates a protective ring of immunity around the infection.
The Full Story
Ring vaccination is a targeted outbreak-control method in which contacts of a case, and sometimes contacts of contacts, are vaccinated quickly. The strategy was used famously in the final phase of smallpox eradication and later in Ebola outbreak response. By focusing resources around each detected case, public-health teams can interrupt transmission even when vaccine supplies are limited. The method depends on rapid diagnosis, tracing, and trust in the affected community. It is one of the most elegant tools in infectious-disease control.
Key Facts
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