Okwirry used to receive six-month supplies of ARVs from the clinic but can only get one month.
“I told Chichi: what about if you hear the drugs are doomed?” Okwirry said, growing emotional. “She told me: 'Mom, I'll be leaning on you.'”
The US state department issued a waiver last month exempting funding for HIV treatment from the freeze.
However, the USAID payments system in Kenya is down after the cuts, meaning contractors who implement the programmes cannot be paid, said Mackenzie Knowles-Coursin, who was the deputy head of communications for USAID East Africa, until resigning on February 3 in protest at the dismantling of the agency.
"[Implementers of] Projects are left wondering: 'How am I going to resume activities if you're not paying me?'” he said.
“The waivers that have been given are waivers on paper.”
Officials in Washington have not authorised the release of money required to distribute the $34m (R621m) worth of medicine and equipment at the warehouse, he said.
According to a Kenyan government document seen by Reuters, about $10m (R183m) is needed for distribution. The Mission for Essential Drugs and Supplies (Meds), the Christian charity that runs the warehouse, supplies drugs to 2,000 clinics nationwide, according to its website.