U.S. stock exchanges declined amid the coronavirus situation

On Wednesday, major U.S. stock indices fell by an average of 1%. Dow Jones and S&P 500 lost 1.16% and NASDAQ - 0.82% each. Negative impact on stock exchanges has further spreading coronavirus and strengthening quarantine measures in different countries. However, Pfizer's news about the effectiveness of the vaccine could not change the situation. The pharmaceutical giant has announced that its vaccine, developed in collaboration with BioNTech, is 95% effective in final trials and it plans to apply for registration in the coming days. Since then, his shares have risen by 0.8%. On Wednesday, papers of companies that are positively affected by the transition of people to remote work, for example, Zoom Video Communications - shares of the latter added 3.3%. The worst demand was demonstrated by the shares of medical insurance companies. On Tuesday, the head of the Federal Reserve Jerome Powell drew attention to the fact that further deterioration of the situation with coronavirus will increase uncertainty about the prospects of the economy, creating additional difficulties for it.