The Ministry of Foreign Affairs (http://www.mofa.go.ug/index.php/immigration) contains all the information needed in regards to visas and requirements for entering Uganda. Visas are needed for citizens of countries outside of the African continent, as is proof of a yellow fever vaccination.
Health and Safety
Many mosquito borne diseases are present in Uganda, with malaria being the most present so precautions should be taken. There have been cases of Ebola and Marburg fever in the past that are believed to be contracted from bats that live in caves. Visitors should be sure to stay hydrated and bring ciprofloxacin in case of a diarrhea disease, which is quite common among travelers. It is also best not to swim in the lakes or walk barefoot due to schistosomiasis. The infection rate of HIV/AIDS is high here so do not have unprotected sex.
Some areas in the north can be quite dangerous for tourists, especially in the northeast as well as close to the border of the Democratic Republic of the Congo; however, the national parks are perfectly safe. Kampala is relatively safe in the tourist areas but can be dodgy in non-tourist areas. Still, it is best not to bring attention to yourself with showy, expensive items. Credit card fraud is quite high so they should only be used if absolutely necessary, while pickpocketing is not so prominent.
It is important to note that there was a proposed ‘Anti-Homosexuality Bill’ and although it failed to go through there is a very bad attitude towards homosexuality in Uganda and it is considered to be illegal. If the bill had passed it would have meant the death penalty for repeat offenders, although there is currently a prison sentence for those caught in same sex relations. Homosexual travelers should be extremely careful.