Mukuru anoona nezvekufambiswa kwemabasa musangano iri , VaMarck Chikanza , vanoti vachatorawo mukana wekucherechedza zuva iri vachiparurawo gwaro rakanangana nehutano hwevanhu vakwegura , uye kupemberera kusvitsa makore makumi manomwe kwesangano reWorld Health Organisation .