While many countries around the world have reported shortages of antibiotics as respiratory infections return with a vengeance after the lifting of pandemic restrictions, the problem in Europe is particularly acute.

The letter sent to the European Medicines Agency comes as antibiotics, including amoxicillin – used to treat bacterial infections and often prescribed for ear and chest infections in children – have been in short supply since October.

The U.S. Food and Drug Administration said on Wednesday there was a shortage of Adderall, a treatment for attention deficit hyperactivity disorder, following intermittent manufacturing delays at Teva Pharmaceutical Industries Ltd.

Medical device companies and some drugmakers with manufacturing operations in Puerto Rico said they do not expect meaningful disruption from Hurricane Fiona, which knocked out power for over 3 million people and caused flooding and landslides on the island.