Today marks the start of World Immunization Week, which aims to promote the use of vaccines to protect people of all ages against disease. The campaign this year comes at a very difficult time, as the globe battles to control the coronavirus pandemic, with no vaccine yet developed. Meanwhile, there are growing concerns over a neglect of other health issues that continue to threaten children, especially - as the world focuses attention on COVID-19. For more on the significance of immunization in the era of a major public health emergency, Channel Africa's Jwalane Thulo spoke to a virologist in South Africa, Dr Ramokone Maphoto.