T H Chen’s scientific contributions

... For, having previously claimed the discovery of plague' pathogen, over the competing claim by Japan's Kitasato Shibasaburō, the Institut Pasteur was now also aiming to claim the discovery of the cure and/or prevention of the disease. 115 In short, as 'a diplomatic strategy centred on the production and distribution of the anti-plague serum', by 1898, the Institut Pasteur's imperial ambition stood severely challenged by the actual limitations of its product. 116 If the aim of the India Mission was not just to establish and improve the efficacy of the serum, but also to showcase it to the world, then, for all Simond's optimism that progress was in sight, this was a major scientific, economic and PR debacle for the Institut Pasteur. ...

Reference:

In search of lost fleas: reconsidering Paul-Louis Simond’s contribution to the study of the propagation of plague