KYIV, Ukraine (AP) — Their costumes are put on with surgical precision: Floppy hats, foam noses, bright clothes, and a ukulele with multicolored nylon strings.

Moments later, in a beige hospital ward normally filled with the beeping sounds of medical machinery, there are bursts of giggles and silly singing.

As Ukraine’s medical facilities come under pressure from intensifying attacks in the war against Russia's full-scale invasion, volunteer hospital clowns are duck-footing their way in to provide some badly needed moments of joy for hospitalized children.

The “Bureau of Smiles and Support” (BUP) is a hospital clowning initiative established in 2023 by Olha Bulkina, 35, and Maryna Berdar, 39, who already had more than five years of hospital clowning experience between them. “Our mission is to let childhood continue regardless of the circumstances,” Bulkina, told The Associated Press.

BUP took on new significance following a Russian missile strike on Okhmatdyt Children’s Hospital in Kyiv in July. The attack on Ukraine’s largest pediatric facility forced the evacuation of dozens of young patients, including those with cancer, to other hospitals in the capital – and the clowns did not stand aside.

Together with first responders, Berdar and Bulkina helped with clearing the rubble after the attack and attended to the children who were relocated to other medical facilities. But even for them, the real heroes there were young patients.

“When the children were evacuated from Okhmatdyt after the missile attack, many of them were in extremely difficult medical conditions, but even in this situation they tried to support the adults,” said Berdar, recalling the events after the strike.

The hospital clowns, who use traditional clown noses and bright costumes, are now visiting multiple hospitals in the Ukrainian capital region, including the National Cancer Institute, where patient numbers have surged after the Okhmatdyt attack.

Tetiana Nosova, 22, and Vladyslava Kulinich, 22, are volunteer hospital clowns who go by Zhuzha and Lala and joined BUP more than a year ago. For them, hospital clowning is as challenging as it is rewarding.

“I volunteer so that children don’t think about their illness, even for a short moment, so that laughter replaces tears, and joy replaces fear, especially during medical procedures,” Kulinich said. In her practice, she stays together with children, sharing all their feelings, whether they are fear, pain, or joy.

For Nosova, the process itself is what made her start clowning. “I am motivated by joy. I simply enjoy it. All my life I studied to be an actress, all my life I enjoyed making people laugh. That’s enough motivation for me," she said.

In a city grappling with nightly air raid alerts and power outages, overworked doctors say the presence of the volunteers brings a much-needed distraction, often helping children who had been undergoing painful medical treatment to feel happy again.

“Clowns play a very important role in the treatment of children. They help distract the children, they help them forget about the pain, they help them not pay attention to the nurses or doctors who come to treat them,” Valentyna Mariash, a senior nurse on the Okhmatdyt cancer ward, told AP.

The July attack complicated treatment plans for many families. Daria Vertetska, 34, was in Okhmatdyt with her 7-year-old daughter, Kira, when the missile exploded just outside their ward. Kira, who was diagnosed with rhabdomyosarcoma of the nasopharynx, was asleep, medicated with morphine.

“It saved her that she was covered with a blanket during the strike, but still, her head, legs, and arms were cut with small glass shards,” said Vertetska. She and Kira returned to Okhmatdyt in less than a week after the attack.

Not all the children returned to the hospital. Some stayed in the medical facilities where they had been evacuated, while others were moved to apartments paid for by charity organizations and located in the hospital’s vicinity.

Despite hospital clown initiatives like BUP across Ukraine, the need for their work grows exponentially. “When I see how our work is needed in the large children’s hospitals located in Kyiv, I can only imagine what a great need there is in regional and district hospitals, where such (clown) activity, as for example in Okhmatdyt, to be honest, simply does not exist,” Berdar said.

The World Health Organization, earlier this month, warned that the country faces a deepening public health crisis, largely due to devastating missile and drone strikes on the country’s electricity system as well as hospital infrastructure.

Since the start of Russia’s full-scale invasion in February 2022, WHO has recorded nearly 2,000 attacks on Ukraine’s health care facilities and says they are having a severe impact.

Children are among the most vulnerable, but a mental health crisis affects the whole country. It means the clowns’ work has won broad support from medical professionals.

Parents are simply happy to see a smile return to their children’s faces.

“With clowns, children learn to joke, they play with soap bubbles, their mood lifts. Today, Kira saw clowns playing the ukulele, now she wants one, too,” said her mother, Daria.

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Associated Press writer Derek Gatopoulos contributed to this report.

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Follow AP's coverage at https://apnews.com/hub/russia-ukraine