One employee says investors should be patient.

FORBES: Chief Executive Jerry Yang

Januvia's safety labeling is expected to contain no reasons the drug should never be given to a patient and only one potential drug interaction.

FORBES: Merck Starts Diabetes Race

To wait at least 48 hours if they have experienced symptoms of vomiting or diarrhoea and no more than two visitors should be at a patient's bedside at any one time.

BBC: North West Wales