We now know that Japanese aviators sprayed fleas carrying plague germs over metropolitan areas like Shanghai, Ningpo, and Changteh, and that flasks of disease-causing microbes—cholera, dysentery, typhoid, plague, anthrax, paratyphoid—were tossed into rivers, wells, reservoirs, and houses. The Japanese also mixed food with deadly germs to infect the Chinese civilian and military population. Cakes laced with typhoid were scattered around bivouac sites to entice hungry peasants; rolls syringed with typhoid and paratyphoid were given to thousands of Chinese prisoners of war before they were freed.
