Why is the German cockroach considered a public health pest?

The German cockroach is considered a public health pest primarily due to its association with high levels of allergens and asthma. These cockroaches can produce feces, saliva, and body parts that act as allergens, which can trigger allergic reactions and exacerbate asthma symptoms in sensitive individuals. In environments where these pests thrive, such as homes and buildings, their high population density can lead to significant allergen accumulation. This exposure is particularly concerning for individuals with pre-existing respiratory conditions or allergies, making it a critical public health issue.

While some may argue other factors could play a role, such as noise disturbances or disease transmission, the direct correlation between cockroach presence and increasing asthma cases highlights their impact on public health more distinctly.