The World Health Organization (WHO) says that a four-year girl in Malawi diagnosed with wild polio was not fully immunised, prompting the country's health ministry and its partners to embark on a national immunisation campaign targeting over two million children aged under five. At a press conference held in Lilongwe, WHO representative Janet Kayita urges people to "give [children] the two doses. This is the way to halt the spread." IMAGES AND SOUNDBITES