Guest Column - Halfway to the target date for the realisation of the United Nations Sustainable Development Goals, the promise of health for all hangs in the balance, making it more important than ever that we make up for the ground lost during the Covid-19 pandemic, writes Dr Susan Nakhumicha Wafula in a guest column for AllAfrica. Dr Wafula, Kenya's Cabinet Secretary for Health, reflects on a recent meeting of health ministers from the Commonwealth of Nations, the 56-nation association which includes 21 states from Afr