The preferred antibiotic treatment for syphilis is in short supply across the United States as infections soar, and more than three dozen leading public health groups are urging the White House to intervene.

The National Coalition of STD Directors and 38 other public health groups sent a letter to members of the White House Drug Shortage Task Force on Monday that detailed how clinics are reporting trouble placing orders for the go-to syphilis drug Bicillin — a long-acting injectable form of the antibiotic penicillin — and those that have been able to place orders are receiving only partially filled or delayed orders.

The letter calls for the White House task force to take up the Bicillin shortfall as a priority and work with drugmaker Pfizer to ensure adequate supply.