From the 16th September on I plan to stay in Addis Ababa for a week. Now I have discovered that there are recommendations to get a Yellow Fewer vaccination for a stay in Ethiopia Link. Due to the spontaneous decision for the trip and bad planning on my side I am not vaccinated yet. I have further learned that it takes 10 days until the vaccine becomes effective Link. As I would directly fly from central Europe, I think I won’t be denied entry into the country (I wasn’t in a Yellow Fever risk region lately). However I wonder how high the risks are of getting Yellow Fever in the city? I don't plan any trips to the countryside during my stay. Should I chancel my trip, or does it make sense to still get vaccinated or should I simply go without vaccination? So I don't know if a 7 day old vaccine is still better than none or how big the risks of getting the sickness are anyway? As Yellow Fever is transmitted by mosquitos and Addis Ababa is on high elevation I wonder if that could help to reduce risks.
I've established that
- Ethiopia is a Yellow Fever risk region
- The vaccination takes 10 days to be effective
- The virus is transmitted by mosquitos
- Addis Abeba lies on 2350m elevation
My questions would be:
- Is Addis Abeba a Yellow Fever risk region (apparently it isn't for Malaria because of the high elevation Link )
- How is the effectiveness of the vaccination developed over time? Is it at 5 days after the vaccine 50% effective or 0%?
- Will I be allowed to enter the country without a valid Yellow Fewer vaccination certificate?
With the hint from @Michael Seifert that Yellow fewer is transmitted by Aedes aegypti I found a world map which shows propability of predicted occurence for that species Link. It seems chances of encountering it in Addis (marked with a red dot) are slim. However I've not checked other Aedes which apparently also can spread Yellow Fever and I still assume it's a good idea to get vaccinated.