Notable healthcare headlines for the week: Pfizer, Sanofi, and Novartis in focus

Wall Street closed in the green on Friday after the September nonfarm payrolls report came in cooler than economists expected. The blue-chip Dow ended up 0.5%, the benchmark S&P 500 gained 0.7%, and the tech-focused Nasdaq Composite advanced 1.2%. However, the S&P 500 Health Care Sector Index (XLV [https://seekingalpha.com/symbol/XLV]) slipped 2.66% for the week. The top S&P 500 healthcare gainers and losers for the past week are as follows: TOP GAINERS: McKesson (MCK [https://seekingalpha.com/symbol/MCK]) +4.11% Cardinal Health (CAH [https://seekingalpha.com/symbol/CAH]) +3.67% The Cooper Companies (COO [https://seekingalpha.com/symbol/COO]) +2.76% Centene (CNC [https://seekingalpha.com/symbol/CNC]) +1.89% Stryker (SYK [https://seekingalpha.