When mixing Covid-19 booster shots is safe

Those who got Johnson & Johnson will receive Oxford/AstraZeneca, Pfizer or Moderna. [Boniface Okendo, Standard]

Scientists have reassured Kenyans of safety in mixing of Covid-19 vaccines, as admission of booster shots picks up.

Moses Masika, a virologist at the KAVI Institute of Clinical Research, explained that mixing vaccines, scientifically known as heterologous, is safe, as long as they are approved by the World Health Organisation (WHO).