Non-immunity

Non-immunity refers to the state or condition of not being protected from a particular disease, infection, or harmful substance. It signifies a lack of resistance, making an individual or organism susceptible to contracting the illness or experiencing adverse effects upon exposure. This can stem from a variety of causes, including a naive immune system, insufficient prior exposure, or weakened immune defenses.

Non-immunity meaning with examples

• Following the measles outbreak, many children showed non-immunity, requiring vaccination. The lack of pre-existing antibodies meant they were vulnerable, highlighting the crucial role of immunization programs in preventing widespread infections and protecting public health.
• The patient, experiencing severe symptoms, demonstrated non-immunity to the seasonal flu strain. Their body's inability to mount an effective defense allowed the virus to replicate, illustrating the necessity of antiviral treatment and rest.
• Due to travel to a malaria-endemic region, the explorer's non-immunity left them at risk of infection. Prophylactic medication and awareness of the risks were essential to prevent the disease from developing.
• The aging population often exhibits non-immunity to pneumococcal pneumonia because their immune systems might not respond effectively to vaccines, creating a higher susceptibility and a need for close medical surveillance.