Please match the disease to its mode of transmission.

Airborne

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Vector-borne

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Waterborne

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Rationale:
A. Asking affected adults to keep a diary of food intake is incorrect because this intervention targets individual behavior, not the broader environment. It focuses on personal monitoring and self-awareness rather than modifying environmental factors that influence obesity.

B. Determining whether clients have a family history of obesity is incorrect because this addresses host factors, specifically genetic predisposition, rather than environmental influences. It helps identify risk but does not change the environment to prevent obesity.

C. Providing low-fat meal options at public school is correct because it targets the environmental component of the epidemiological triad. By modifying the availability of healthier food options in schools, the intervention reduces environmental risk factors that contribute to obesity at a population level. Environmental interventions aim to make healthy choices easier and more accessible for the community.

D. Measuring a client’s body mass index (BMI) is incorrect because this is a screening and assessment tool that identifies individuals at risk or affected by obesity. It does not alter the environment or reduce incidence; it only monitors the host’s condition.

Rationale:

A. Carbon monoxide exposure primarily causes acute neurological symptoms, such as headache, dizziness, nausea, confusion, and in severe cases, loss of consciousness or death. It is not typically associated with chronic developmental delays or learning disabilities in children.

B. Lead is correct. Lead exposure, particularly in older housing built before 1978 when lead-based paint was commonly used, can cause cognitive deficits, learning disabilities, hearing impairment, developmental delays, and behavioral problems in children. Lead poisoning often occurs through ingestion of lead-contaminated dust, paint chips, or soil, especially in apartment complexes with deteriorating paint. Chronic exposure has long-lasting neurological and developmental effects, making it a critical public health concern.

C. Nitrogen dioxide exposure is primarily linked to respiratory issues, such as wheezing, asthma exacerbations, and decreased lung function, rather than cognitive or developmental impairments.

D. Radon is a radioactive gas associated with lung cancer risk, especially in adults, but it does not cause learning disabilities or developmental delays in children.