Staff members at the United States’s premier infectious-disease research institute have been instructed to remove the words “biodefense” and “pandemic preparedness” from the institute’s web pages, according to e-mails Nature has obtained.

The directive comes amid a broader shake-up at the US National Institute of Allergy and Infectious Diseases (NIAID), one of 27 institutes and centres at the National Institutes of Health (NIH). The NIAID is expected to deprioritize the two topics in an overhaul of its funded research projects, according to four NIAID employees who spoke to Nature on the condition of anonymity, because they are not authorized to speak to the press.