Afghan civilians continued to die by the dozens on Thursday in violent attacks, this time in what Afghan officials said was an American drone strike in eastern Afghanistan, and in a separate Taliban bombing that leveled a hospital in southern Afghanistan.

At least 30 people were killed and 28 wounded in the drone attack in Nangarhar Province, according to local government officials, who blamed United States aircraft. They said some of the victims had gathered to harvest pine nuts at the time of the attack. Separately, at least 22 people were killed and 90 wounded in a suicide truck bombing claimed by the Taliban at a hospital in Zabul Province, officials said.