A checklist of other things to consider:
On the home front, make sure all bills are paid or have a means of being paid. If you are retaining a residence while abroad, make sure the rent/mortgage is taken care of and that utilities are being paid while you are away. Insure that important institutions like your bank are able to reach you.
If you are retaining a bank in your home country, ask about fees for overseas transactions. If you have a credit card, find out if there are additional fees or any changes you need to make with your account. Inform banking industries that you will abroad to not arouse suspicious activity on your account as anti-theft systems can see this activity and put a most inconvenient hold on your account.
It is best to inform tax offices of any change in residency. Some countries have reciprocal tax agreements, and others may require you to pay some form of taxes both in your home country and aboard. Most National Tax Administrations are an excellent resource for exactly what steps to take when moving away. For more information, refer to our section on taxes.
You should do some research about the drinking water in Panama depending on your location. For example, it is safe to drink the tap water in Panama City, but it is widely regarded as unsafe in Bocas del Toro.
Whether or not you need certain vaccines is contingent upon where in Panama you will be going. If you go to a more rural location, you might need a vaccine for Yellow Fever, Hepatitis A, Hepatitis B, Typhoid, Rabies, Malaria, Dengue, etc. For the most up to date information, look at the alerts from health authorities in your own country and warnings they have for travelers to Panama.
And for concerns about your health when abroad, the World Health Organization (WHO) publishes International Travel and Health, which is revised annually and is available free online. Another excellent resource is MD Travel Health. It provides free, complete travel-health recommendations for every country and is updated daily.