Question

controlling the spread of infection
giardia infection is an intestinal infection that causes cramps, nausea, and diarrhea. it is caused by a parasite and is one of the most common waterborne infectious diseases in the united states.
tia knows that giardia is a pathogen found in fecal matter. the parasite is often found in streams, swimming pools, spas, and municipal water supplies. to help her community prevent the spread of giardia in the future, tia wants to suggest a preventive measure to public officials in her community.
what preventive measure should tia share with public officials in her community that effectively targets her goal to prevent the spread of giardia?
research how giardia infects the human body.
monitor trends in the growth of giardia populations.
identify the symptoms associated with this infection.
enact measures to test city pools more frequently

Explanation:

• Researching how giardia infects the human body (first option) is more about understanding the pathogen's mechanism rather than a preventive measure.
• Monitoring trends in giardia population growth (second option) is a form of surveillance, not a direct preventive action.
• Identifying symptoms (third option) is related to diagnosis and treatment awareness, not prevention.
• Enacting measures to test city pools more frequently (fourth option) directly targets a common source (water - related environments like pools) where giardia can be present, which is a preventive measure.

Answer:

Enact measures to test city pools more frequently.