You really need to use all the data for countries that are reasonably western/developed (to avoid Africa with a much younger population and less testing biasing everything). It's all available and there are no valid excuses not to. As I never tire of pointing out, Swedish people aren't aliens and nobody claimed they were before they inconveniently proved the countermeasures weren't warranted. If you use all the data (from developed countries), Sweden ends up way ahead, which is conclusive proof of many things.