The Centers for Disease Control and Prevention (CDC) has announced that the Johnson & Johnson COVID-19 vaccine is no longer available in the United States. All remaining doses of the vaccine expired last week, and the CDC has directed healthcare providers to dispose of any remaining doses they may have had. According to CDC data, approximately 19 million people in the US have received the J&J vaccine since its initial availability. However, more than 31.5 million doses were delivered to states and other jurisdictions, leaving around 12.5 million doses unused. The CDC had previously limited the emergency use authorization of...