Anyone who went to Paris to watch the Olympics are being asked not to donate blood in Switzerland for the next few weeks.
There are concerns about viruses circulating – especially chikungunya, which is a disease spread by the tiger mosquito.
Nathalie Rufer, head of the transfusion centre in Epalinges in Vaud says there’s an epidemic in Paris at the moment.
Donors are being asked to stay away for at least a month.
Your pictures of the eclipse
You sent in your pictures of the eclipse - many thanks
Copernicus reports hottest summer ever measured
Switzerland is in the grip of a level 3 heat alert, with Geneva heading for temperatures of up to 36°C on Friday.
Tough new banking rules possible
The Federal Council has launched consultations on new banking rules that could withhold or claw back bonuses from top banking executives.
Speed crackdown affects all of Switzerland
The Federal Council has tightened the rules for imposing 30 km/h zones on city streets, requiring cantons to prove that a slowdown will not push traffic into residential neighbourhoods
Back to school concern over heat
Vaud is preparing to map every school building in the canton to identify the classrooms most vulnerable to extreme heat
Eye warning for eclipse watchers
Anyone who watched Wednesday's solar eclipse without proper glasses should watch for signs of retinal damage, doctors are warning
