Riskfactorphobia & Hygiene
I started my crisis research by looking into something called "riskfactorphobia" which is a term used to explain psychological effects of health scares, where people become hyper-sensitive to such scares and overreact. SIRC warned that "riskfactorphobia" was set to become a major public health problem, citing the MMR vaccination crisis as a prime example.
According to the "Hygiene Hypothesis" early exposure to dirt, germs and dust can help prevent the development of allergies later in life. Being too clean could be making us ill.