When he finally does so, half a day has been lost from the five-day vaccination scheme. It is a small reminder that, for health care in Africa, politics can be as decisive as poverty.
Grasping her son by the hand, Marie Issa is determined despite the long wait to get him a measles vaccination and a free mosquito net which could save the two-year-old's life.
"Our children often fall sick, especially with malaria," Issa said. "Hygiene here is bad. When it rains, everything floods and the toilets are outside. We need to protect our kids against illness."
This is no isolated rural African backwater but a poor neighbourhood in the glossy capital of oil-rich Gabon.
Although it ranks as one of Africa's few middle-income countries, Gabon's health record is poor. Less than half of its 1.6 million people have had any kind of vaccination, despite billions of dollars in oil revenues.
"Many people here are now in ill health," said the local representative of the World Health Organisation (WHO), Andre Ndikuyeze. "It is really a surprise. If they had invested more in health and education, it could be much better."
Gabon's President Omar Bongo, Africa's longest serving leader and widely viewed as one of the world's richest rulers, has blamed the poor health services on corrupt officials, in what his critics say is an attempt to deflect public anger.
"I refuse to believe that the lack of medicines in our health centres, despite the large budgets allocated to them every year, is not due to embezzlement," he said in a speech in December to commemorate his 40th anniversary in power.
But foreign aid workers have questioned the government's strategy. They say plush hospitals, like the state-of-the-art new military clinic in Libreville where Bongo has a private suite, are no substitute for local healthcare.
"They've neglected the basics, so now we are trying to convince the government to invest in health posts at a village and community level," said the WHO's Ndikuyeze.
HUGE CHALLENGES
The five-day inoculation campaign in Gabon, funded by the United Nations Foundation, aimed to provide some 300,000 children under five with a measles vaccination, vitamin A and de-worming tablets, and a mosquito net to prevent malaria.
Worldwide more than 750,000 children under five die each year from malaria, most of them in Africa where it is the main cause of infant mortality. Only 3 percent of African infants sleep under long-lasting, insecticide-treated nets, the United Nations says.
The vaccination campaign faced huge challenges: materials were late reaching vaccination stations as officials complained they lacked vehicles. Some centres were not well signposted, and many staff appeared poorly trained.
Some aid workers expressed frustration Gabon did not provide more support for the programme. It relied on a $1 million donation from the UN Foundation, while using a $200 million windfall from record oil prices to cancel foreign debt.
