Question

herd immunity occurs when:antibiotics eliminate bacteriaenough individuals are immune to stop transmissionall animals are vaccinatedpathogens lose virulencequestion 51 (1 point)which disease is caused by a deficiency in vitamin d?goiterricketsscurvyanemia

Explanation:

Herd immunity is a concept in public health. It occurs when a sufficient proportion of a population is immune (through vaccination or prior infection) to an infectious disease, which then makes the spread of the disease from person - to - person unlikely. This is what the option "Enough individuals are immune to stop transmission" describes.

For the Vitamin D deficiency question, Vitamin D is crucial for calcium absorption. Rickets is a disease in children where there is softening and weakening of bones, which is caused by a deficiency of Vitamin D (and also calcium and phosphate). Goiter is usually due to iodine deficiency, scurvy is due to Vitamin C deficiency, and anemia can be due to iron, Vitamin B12, or folate deficiencies among other causes.

Answer:

For the first question: Enough individuals are immune to stop transmission.
For the second question: Rickets.