Most medical schools or hospitals have clear guidelines on the vaccinations they expect their students or employees to have received. Therefore I would advise you to look at the guidelines of the medical school/hospital/other medical environment you belong to and those of your desired elective location.
I’d advise the following vaccinations: Cholera, Diphtheria, Hepatitis A, Hepatitis B, Meningococcal Meningitis, Poliomyelitis, Rabies, Tetanus, Typhoid, Yellow Fever (Yellow Fever certificate is required at the airport and will need to be shown at passport control)
There are a variety of anti-malarials available, some more specific for Nigeria, its important you receive advice from a doctor or pharmacist before making a purchase. Make sure you are fully aware of the course for the specific antimalarial you have chosen, side effects and drug interactions if you are taking other medication.
Once you know what antimalarial you would like to buy consider buying the generic medication rather than the brand name – this will save you money! You can also calculate the exact number of tablets you need (included before and after travel needs) so you won’t have left over medication.
It may also be helpful for you to purchase some anti-emetics, anti-diarrhoeal, simple analgesia (such as paracetamol) and antihistamines. Getting diarrhoea within the first few days of arriving in Nigeria because your GI system is getting used to the pepper, leaf soups and heat is not the best welcome gift!!
Other resources (mostly relevant to the UK, so please look for the equivalent for your country):
If you have any medical or mental health conditions, seek medical advice from your local doctor before making any definitive plans or payments towards your Nigerian elective.
All medications should be purchased after a medical consultation and with a prescription. All medications should be used as prescribed by your medical practitioner.