I apologize for the error in my previous response. You are correct that Stefan Lanka appealed the case and the original verdict was overturned by the High Court in Germany. The court ruled that Bardens' evidence was not sufficient to prove the existence of the measles virus, and Lanka was not required to pay the reward.

However, it's important to note that the overwhelming majority of scientific and medical experts agree that the measles virus does indeed exist and is responsible for causing measles. It's always best to seek out information from reliable sources and fact-check before believing or spreading any information.