Question

✩.*˚ai

紫のラインの日本語訳を教えてほしいです。特にfor reasonsから後ろが分かりません。

暗
Ben Hemmens is the father of three children, / including four-year-old
1
Sophie.// According to medical experts, / it is normal <for kids around
「~によると」
形式主語
this age to catch colds four to five times a year>.// In adults, / the ratio is
真主語
T一につき」
about two to three times a year, / for reasons [that are not completely
「関係代名詞9002E
5 clear].// However, / says Dr. Ranit Mishori of Georgetown University