Where it’s common: Developing countries without sufficient access to immunization.
Where it’s common: Often dubbed “lockjaw,” tetanus is bacteria found in dirt, dust, soil and fecal matter that travel up nerves leading to muscular stiffness. In many cases, it can be fatal, especially if contracted through an open wound, animal bite or burn. Those suffering from tetanus experience spasms on the neck, buttocks, back and chest with difficulty swallowing and a high fever. Newborns, individuals above the age of 60 and those who haven’t been immunized are particularly at risk.