Stronger together: evidence for collaborative action on neglected tropical diseases.

This editorial has been written by programme leads at the Liverpool School of Tropical Medicine in the UK to condense the learning shared across articles. Articles within this supplement have been written and led by authors in Nigeria and Liberia, and informed by learnings from across the partnership including from our partners in Ghana and Cameroon and articles previously published. Early career researchers were supported throughout the COUNTDOWN programme to publish evidence and lead the production of impactful papers. Decision makers and local implementers from each context are also authors on the papers within the supplement and were supported to engage with the writing process.