The Johnson & Johnson vaccine pause in the U.S. – because of reports of rare cases of potentially fatal blood clots in a small number of vaccinated women – could have global ramifications.
Even though the J&J vaccine so far has had very limited distribution outside of the United States, it's slated to provide more than a billion doses to the global fight against COVID.
J&J is authorized in, among other countries, Brazil, Canada, Peru, Chile and New Zealand (although none of those countries have received shipments yet).