Why vaccinate adults against hepatitis B? Hepatitis B can lead to cirrhosis, liver cancer and death. Hepatitis B is incurable. Up to 1.4 million Americans have chronic HBV infection. Hepatitis B is 50 to 100 times more infectious than HIV.
Re: Pool about to overflow from heavy rain dunno of this works, but try this: put one end of a hose in the pool, the other in a lower part of the garden. Now you need to suck on the hose (the side outside the pool) untill water starts running, normaly, the water will drain.
Moving the lever raises and lowers a stopper, which opens or blocks the drain passage. It's definitely possible to get it working again, and that access door may come in handy. First, put a towel over the tub drain to capture any small parts you might drop, then remove the screws holding the overflow cover to the tub.