Honest about the risks, and specific about what prevents each one.
Dengue
Named by both sources. The Government of Canada notes the mosquitoes that carry it typically bite in the daytime, particularly around sunrise and sunset, that risk varies with season, year, region and elevation, and that dengue can become severe and be fatal.
Prevention No vaccine or medication to prevent it is available in Canada. Repellent through the day, reapplied — and remember that malaria tablets do nothing for dengue, so being on tablets is not a reason to relax about bites.
Zika
A risk in Honduras according to both sources. Spread by mosquito bite, also sexually transmitted, and it can cause serious birth defects.
Prevention Bite avoidance, plus condoms or avoiding sexual contact, particularly in pregnancy. If you are pregnant or planning to be, the Government of Canada asks you to discuss the trip with a healthcare provider first and says you may choose to postpone. It also affects which malaria tablets are suitable, so tell us early.
Diving, boats and the sea
The Government of Canada says coastal waters can be dangerous, riptides are common, rescue services may not be consistent with international standards, and not all beaches have lifeguards or warning flags. It asks travellers to undertake scuba diving and other water activities only with a well-established company, and for adventure tourism generally to buy travel insurance that includes helicopter rescue and medical evacuation. It also says emergency medical facilities are very limited on the Bay Islands.
Prevention Book with an established operator, check before you pay that your insurance names diving and names medical evacuation, and treat a coral graze as a wound to clean and cover rather than a scratch to ignore.
Chagas disease and leishmaniasis
Both are on CDC’s Honduras list, and both on Canada’s. Chagas comes from triatomine bugs, which the Government of Canada notes are active at night; cutaneous and mucocutaneous leishmaniasis come from sand fly bites, most active between sunset and sunrise in rural and forested areas. Canada says the risk of each is generally low for most travellers.
Prevention Bite avoidance after dark and a net if you are sleeping in poorly constructed or unscreened rural housing. There is no vaccine for either.
Leptospirosis and melioidosis
Both appear on CDC’s Honduras list. Leptospirosis comes from water, mud or food contaminated with animal urine, including swimming or wading in fresh water and contact with floodwater; melioidosis from contact with contaminated fresh water, mud or soil, especially after heavy rain. Honduras’s rainy season runs May to November and the Government of Canada says it can lead to severe flooding.
Prevention Avoid floodwater and muddy water after heavy rain, cover cuts before entering fresh water, and do not swallow river water.
Hantavirus and tuberculosis
Both on CDC’s risk list for Honduras — hantavirus from the urine, droppings or saliva of infected rodents, tuberculosis through the air from someone infectious. Neither changes what a typical trip needs, but the whole list belongs on the page rather than the convenient half of it.
Prevention Avoid rodents and places their waste builds up; avoid close contact with people who are unwell.
Food and water
The reason the first two vaccines on this page are the first two. The Government of Canada’s rule is boil it, cook it, peel it, or leave it, and it asks you not to swallow water when swimming, showering or bathing. Travellers’ diarrhoea is the most common illness travellers get anywhere.
Prevention Bottled or treated water, ice only from safe water, hot food served hot, fruit you peel yourself. Rehydration sachets in the bag — and pack them, because you may not be able to buy what you want there.
Roads
The Government of Canada says road conditions and road safety are poor throughout Honduras, that accidents causing fatalities are common, and that the number of accidents involving tourists has increased. It lists roaming livestock and wildlife, poorly maintained roads and bridges, unpaved roads, inadequate lighting and missing signage, and notes many roads are poorly delineated because of regular flooding. CDC names motor vehicle crashes among the main causes of death for travellers abroad.
Prevention No night driving. Arrange transfers through your hotel or dive operator rather than improvising at the airport, and build slack into travel days.
New World screwworm
CDC currently notes on its Honduras page that cases of New World screwworm myiasis have been reported in countries where it had previously been eliminated, Honduras among them. It is a fly whose larvae infest wounds — which is a reason to take an open graze seriously rather than a reason to change your plans.
Prevention CDC’s advice: avoid bug bites, clean and cover wounds, sleep in a screened room or under a net or in a screened tent, and avoid spending time around livestock.