They are weighed and measured ​for height and the thickness of their arms, which is an indicator of malnutrition. A July survey by MSF of 888 households in 14 displacement sites in Baidoa found that ​one in four children was severely malnourished. MSF said it had screened more than 21,000 children under five in Baidoa since the start of the year, finding acute malnutrition rates of about 50%. Acute malnutrition ​is less extreme than severe malnutrition but ​still involves sudden weight loss and ⁠is life-threatening. “The world cannot wait for a famine declaration before acting,” said Allara Ali, MSF’s project coordinator in Somalia.