Natural immunity is described as?

Natural immunity is described as?

• A. Disease organism can occur through infection with the actual disease
• B. Immunity conferred by vaccination
• C. Immunity acquired from another person
• D. It is only present in newborns

Answer: (A)

Natural immunity is the immune response your body builds after you’re actually infected with the disease-causing organism and recover. It’s an active process: your immune system creates antibodies and memory cells that help you resist future infections by the same pathogen. This happens without a vaccine, earned through real exposure to the disease. Immunity from vaccination is artificial because it’s brought on without natural infection. Immunity acquired from another person is passive immunity, where immune factors come from someone else rather than your own immune response. And natural immunity isn’t limited to newborns—people of any age can develop it after recovering from certain infections.

Natural immunity is the immune response your body builds after you’re actually infected with the disease-causing organism and recover. It’s an active process: your immune system creates antibodies and memory cells that help you resist future infections by the same pathogen. This happens without a vaccine, earned through real exposure to the disease. Immunity from vaccination is artificial because it’s brought on without natural infection. Immunity acquired from another person is passive immunity, where immune factors come from someone else rather than your own immune response. And natural immunity isn’t limited to newborns—people of any age can develop it after recovering from certain infections.