CD40LG and measles: The number of countries with a non-measles non-rubella discarded rate ≥2/100,000 population decreased from 14 in 2019 to 11 in 2022 (which might indicate that the reduction in reported cases in 2020–2021 might be false) and the number of countries with ≥80% IgM results reported to national public health authorities by the laboratory within 4 days decreased from 12 in 2019 to 9 in 2022 (Table 2).