The economic burden of influenza-associated outpatient visits and hospitalizations in China: a retrospective survey.

Background: The seasonal influenza vaccine coverage rate in China is only 1.9 %. There is no information available on the economic burden of influenza-associated outpatient visits and hospitalizations at the national level, even though this kind of information is important for informing national-level immunization policy decision-making.

Studies on the stability of salvianolic acid B as potential drug material.

Introduction: Salvianolic acid B (Sal B) is one of the major water-soluble compounds isolated from the roots of Salvia miltiorrhiza, which is widely used as a traditional Chinese medicine. Although much research on the general stability of Sal B has been undertaken and reported, there is still a need for further study of the stability required as a potential drug material.

Objective: To study the stability of Sal B in the solid state and in normal saline (NS) solution during storage, as required in the ICH guidelines (2003) and Chinese Pharmacopoeia (2005).