Water Leak

My 2006 model 2619 has developed a leak (a drop every few seconds) in the hot water system. The source of the leak seems to be at the hot water outlet of the tank where the hose to the faucet connects to the tank. I have tried tightening the fitting but the leak persists. I would appreciate any ideas about the cause of the leak and suggestions to remedy this situation. Thanks in advance for your consideration.