New HIV vaccine trial to start in South Africa JOHANNESBURG • A new vaccine against HIV, to be tested in a trial to be launched in South Africa on Wednesday, could be “the final nail in the coffin” for the disease if it is successful, scientists say. The study, called […]

Drugmaker Pfizer decides not to break up business Drugmaker Pfizer decides not to break up business : NEW YORK — Drug giant Pfizer says it won’t split into two publicly traded companies, despite pressure from investors frustrated by its lagging stock price, ending years of Wall Street speculation over its […]