Daiichi begins work on norovirus vaccine; Journal calls for papers on antivaccine attitudes;

> Daiichi Sankyo is collaborating with UMN Pharma on a norovirus vaccine. Release

> Journal PLOS is calling for papers that explore antivaccine attitudes. Post

> Ireland is contending with a surge in flu cases and deaths. News

> Oregon is tightening its vaccine exemption laws. Article

> A roadside bomb in Pakistan has killed a policeman tasked with guarding a polio vaccination team. Piece