M&A wrap: AstraZeneca, Sanofi, J&J, GSK, Blackstone, Carlyle, TA, Centerbridge, AEI, Genstar, Alera, Race for Vaccines

Pharmaceutical giants including AstraZeneca, GlaxoSmithKline and J&J race to develop a coronavirus vaccine. Blackstone Group and Global Infrastructure Partners reportedly offer to buy railroad operator Kansas City Southern. Roark buys ServiceMaster Brands.