Merck & Co (NYSE:MRK) reported quarterly earnings of $1.31 per share which missed the analyst consensus estimate of $1.44 by 9.03 percent. This is a 4.38 percent decrease over earnings of $1.37 per share from the same period last year. The company reported quarterly sales of $11.40 billion which missed the analyst consensus estimate of $11.54 billion by 1.21 percent. This is a 4.86 percent increase over sales of $10.87 billion the same period last year.