There are some risks that are relevant to all travellers regardless of destination. These may for example include road traffic and other accidents, diseases transmitted by insects or ticks, diseases transmitted by contaminated food and water, sexually transmitted infections, or health issues related to the heat or cold. Some additional risks (which may be present in all or part of this country) are mentioned below and are presented alphabetically.
There is a risk of altitude illness when travelling to destinations of 2,500 metres (8,200 feet) or higher. Important risk factors are the altitude gained, rate of ascent and sleeping altitude. Rapid ascent without a period of acclimatisation puts a traveller at higher risk.
There are three syndromes; acute mountain sickness (AMS), high-altitude cerebral oedema (HACE) and high-altitude pulmonary oedema (HAPE). HACE and HAPE require immediate descent and medical treatment.
Altitude illness in Yemen
There is a point of elevation in this country higher than 2,500 metres.
- Travellers should spend a few days at an altitude below 3,000m.
- Where possible travellers should avoid travel from altitudes less than 1,200m to altitudes greater than 3,500m in a single day.
- Ascent above 3,000m should be gradual. Travellers should avoid increasing sleeping elevation by more than 500m per day and ensure a rest day (at the same altitude) every three or four days.
- Acetazolamide can be used to assist with acclimatisation, but should not replace gradual ascent.
- Travellers who develop symptoms of AMS (headache, fatigue, loss of appetite, nausea and sleep disturbance) should avoid further ascent. In the absence of improvement or with progression of symptoms the first response should be to descend.
- Development of HACE or HAPE symptoms requires immediate descent and emergency medical treatment.
Altitude illness in brief
Dengue is a viral infection transmitted by mosquitoes which predominantly feed between dawn and dusk. It causes a flu-like illness, which can occasionally develop into a more serious life-threatening form of the disease. Severe dengue is rare in travellers.
The mosquitoes that transmit dengue are most abundant in towns, cities and surrounding areas. All travellers to dengue areas are at risk.
Dengue in Yemen
There is a risk of dengue in this country.
- All travellers should avoid mosquito bites particularly between dawn and dusk.
- There is currently no medication or vaccination available for travellers to prevent dengue.
Dengue in brief
Middle East respiratory syndrome coronavirus
MERS-CoV is a viral infection transmitted following direct or indirect contact with infected camels or camel-related products. Limited person to person transmission through coughing and sneezing from infected persons, typically in healthcare settings, has also been reported.
Symptoms include fever and cough that can progress to severe shortness of breath and breathing difficulties. Deaths have been reported, with the risk increasing with advancing age or underlying medical conditions.
MERS-CoV in Yemen
MERS-CoV has been reported to occur in this country.
All travellers, particularly those with chronic medical conditions, should practise good general health measures, such as regular hand washing with soap and water at all times, but especially after visiting farms, barns or market areas. They should:
- Avoid contact with camels
- Avoid raw camel milk and/or camel products
- Avoid consumption of any type of raw milk, raw milk products and any food that may be contaminated with animal secretions, unless peeled and cleaned and/or thoroughly cooked.
There is currently no vaccine to prevent MERS-CoV.
MERS-CoV in brief
Schistosomiasis is a parasitic infection. Schistosoma larvae are released from infected freshwater snails and can penetrate intact human skin following contact with contaminated freshwater. Travellers may be exposed during activities such as wading, swimming, bathing or washing clothes in freshwater streams, rivers or lakes.
Schistosomiasis infection may cause no symptoms, but early symptoms can include a rash and itchy skin (‘swimmer’s itch’), fever, chills, cough, or muscle aches. If not treated, it can cause serious long term health problems such as intestinal or bladder disease.
Schistosomiasis in Yemen
According to World Health Organization (WHO), cases of schistosomiasis were reported in this country in 2012.
- There is no vaccine or tablets to prevent schistosomiasis.
- All travellers should avoid wading, swimming, or bathing in freshwater where possible. Swimming in chlorinated water or sea water is not a risk for schistosomiasis.
- Topical application of insect repellent before exposure to water, or towel drying after accidental exposure to schistosomiasis are not reliable in preventing infection.
- All travellers who may have been exposed to schistosomiasis should have a medical assessment.
Schistosomiasis in brief