More on Sri Lanka’s ongoing dengue outbreak this week with a local news article ascribing the rise in cases to a ‘previously latent’ strain of the virus (DENV-3), combined with intermittent rains since August. Surges in the incidence of dengue are occurring in alternate years as a latent strain becomes dominant - a general increase in dengue cases has been seen over the past 10 years. Read more. Singapore is also experiencing a resurgence of the same DENV-3 strain, one that has been relatively uncommon in the country for the past three decades, and so immunity among the population is low. The NEA is warning that high mosquito densities and dengue cases, plus the presence of the DENV-3 strain may lift the weekly case count above the current 300-400.
Advice for travellers
Avoid mosquito bites to protect against dengue fever. To avoid biting insects, apply repellent containing an active ingredient, such as DEET, Picaridin, or oil of lemon eucalyptus (PMD) to all exposed skin when outdoors. Dengue is spread by two types of aedes mosquitoes. Both breed close to dwellings, are found in shady areas and bite mainly during the daylight hours, making them difficult to avoid outdoors. Travellers should also cover up with long-sleeved tops, long pants, and shoes and socks when mosquitoes are most active.
Before you travel, call Travelvax Australia’s telephone advisory service on 1300 360 164 (toll-free from landlines) for country-specific advice and information. You can also make an appointment at your nearest Travelvax clinic to obtain vaccinations, medication to prevent or treat illness, and accessories for your journey.