👉 The "birthday infection" is a term used to describe the phenomenon where a highly contagious disease can spread rapidly within a closed or densely populated group, much like how people share birthdays. When an infected individual enters such a group, the likelihood of others becoming infected increases dramatically, often exponentially, due to close contact and frequent interactions. This rapid spread can occur even if the initial infection rate is low, as each new infection can quickly turn into multiple secondary infections. Factors such as poor hygiene, lack of immunity in the population, and inadequate public health measures can exacerbate this effect, making it crucial for timely interventions like vaccination and isolation to control outbreaks.
