Whenever a new drug goes into the first stages of clinical trial, there are certain groups of people that are excluded from the list of trial participants. Women and children are almost always on the list, as are people who are immunocompromised. Indeed, there are valid arguments for excluding vulnerable groups in the early stages of clinical trials. Many of those reasons have to do with concerns for participants' safety. That does not mean these groups of people can be simply forgotten, however, as was the case for the immunocompromised seeking a COVID-19 vaccine.
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