That was the toll at just one hospital. The fact that this was a high profile attack scattering the bodies of children across a crowded market is only going to make things worse.
Yemenis helps a wounded child after being injured in an alleged Saudi-led airstrike, at a hospital in the northern province of Saada, Yemen, 09 August 2018.
Saudi Arabia and some of its allies have been fighting in Yemen for more than three years against the Houthis, a rebel group who control much of north Yemen, including the capital Sanaa, and drove a Riyadh-backed government into exile in 2014. "Our noncombat support focuses on improving coalition processes and procedures, especially regarding compliance with the law of armed conflict and best practices for reducing the risk of civilian casualties", the statement said.
The Red Cross, however, confirmed that "scores" of children were killed, saying that most of the victims were under the age of 10.
It was unclear how many children were killed and how many air strikes were carried out in the area, in northern Yemen, near the border with Saudi Arabia.
Yemen's rebel-run Health Ministry said that at least 43 died in the attack, NBC News reported.
"We are certainly concerned about the reports that there was an attack that resulted in the deaths of civilians".
The coalition has insisted it never deliberately targets civilians but human rights groups have accused it of bombing markets, schools, hospitals and residential areas.
How was this a military target?
Coalition spokesman Turki al-Maliki told AFP that claims by aid organisations that children were inside the bus were "misleading", adding that the bus carried "Huthi combatants". A Saudi Arabian blockade has contributed to starvation and disease while a United Nations report found the Saudi-led bombing campaign - carried out with US support - has hit schools, even weddings. "We closely coordinate with them", spokeswoman Heather Nauert said.
"But we have seen it drop since the USA pulled out".
The attack on Jazan was the second ballistic missile fired at Saudi Arabia by the Iran-backed rebels this week.
He said it had hit "militants responsible for planning and targeting civilians" in the southern Saudi city of Jazan on Wednesday night, where one Yemeni resident was killed and 11 others were injured by fragments from an intercepted ballistic missile that was launched by the Houthis from neighbouring Amran province.
"We see violations across the country and it's really sad to speak about civilian casualties in a matter of less than a week".
There was no immediate comment from the coalition, which is backing Yemen's government in a war with the Houthis.
The Yemen war has killed more than 10,000 people, displaced more than two million and driven the country to the verge of starvation, according to the United Nations.