Hong Kong, Pakistan and Vietnam Hit By Dengue Fever.

Spraying against Dengue fever

It’s time for another Dengue travel update. So what has changed?

Travelling to a tropical part of the world? Then Dengue may be a problem for you. We produced a blog some years ago on the disease, how is spread and what you can do to prevent it.  The disease hasn’t changed in this time and neither have the destinations, but the purpose of this is to highlight ongoing outbreaks:

Hong Kong

The current outbreak in Lion Rock Park.  Lion Rock Park is a popular destination on the edge of Hong Kong offering amazing views over the city.

The Hong Kong outbreak is particularly alarming as cases could increase exponentially.  The city is home to over 7.4million people and is the 4th most densely populated in the world.  History has shown that disease can spread very rapidly in Hong Kong and medical facilities are on high alert for further cases.


Increase in risk reported in Karachi.  669 cases in 2018 so far.


Hanoi. Cases on the rise with 41 cases in the last week alone.

These are just some areas where the disease is currently being reported.  Don’t forget that this disease is endemic to the tropics and equatorial areas and even though countries may not be reporting outbreaks the disease still occurs very frequently.

On a positive note, as reported in Nature, Townsville (Australia) has seen a massive drop in Dengue cases since the introduction of a mosquito modified to block transmission of the virus.  The mosquitoes were infected with Wolbachia bacteria which then transmitted the bacteria to other local mosquito populations.

The research team released 4 million Wolbachia infected mosquitos in a 66 SqKm area across the city and in the 44 months since the first release they have seen only 4 locally acquired cases of dengue compared to 54 locally acquired cases in the preceding 44 months.   Trials are ongoing in other parts of the world including Rio de Janeiro in Brazil, Medellin in Colombia and Yogyakarta, Indonesia.

Let’s hope these trials prove successful as means of not only reducing the incidence of dengue but perhaps the other diseases this particular mosquito spreads!

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