Microorganisms causing diseases that characteristically are waterborne prominently include protozoa and bacteria, many of which are intestinal parasites, or invade the tissues or circulatory system through walls of the digestive tract. Various other waterborne diseases are caused by viruses.
As the Moon revolves around Earth, both objects also progress in orbit around the Sun. After completing one revolution with respect to the stars, the Moon must continue a little farther along its orbit to catch up to the same position it started from relative to the Sun and Earth.
The speed of the Moon around the Earth is dependent only on its distance and the total mass of the Earth-Moon system (Kepler and Newton). So, changing the rotation of the Earth by a microsecond or so (the Japan earthquake shortened the day by 1.8 microseconds) will not affect the motion of the Moon.