Which type of study design is used in the following scenario:
a researcher interested in the incidence of chlamydia enrolls 1,000 college seniors. sexual habits are identified at baseline and every 6 months thereafter for four years. new cases of chlamydia are recorded over the four year follow-up period.

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Select all the correct answers. lactobacillus is a bacteria that live inside humans. these bacteria live on the nutrients from our bodies. they to keep our gut clean and healthy. s. typhi is a bacteria that enter our bodies through contaminated food. this bacteria causes infections in the body. based on this information, which two statements about the association between these bacteria and humans are true? a. lactobacillus shares a parasitic relationship with humans. b. s .typhi shares a parasitic relationship with humans. c. both lactobacillus and s. typhi share a parasitic relationship with humans. d. both lactobacillus and s. typhi share a mutualistic relationship with humans. e. lactobacillus shares a mutualistic relationship with humans, and s. typhi shares a parasitic relationship multiply chrse

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below