What countries have the most Down syndrome cases?

The prevalence of Down syndrome varies around the world, with some countries having higher rates than others. However, it's important to note that the availability and accuracy of data can vary between countries, making it challenging to provide precise country-specific rankings.

Here are a few countries that have been reported to have relatively higher rates of Down syndrome:

1. Iceland: Iceland has one of the highest reported Down syndrome prevalence rates in the world. Various factors, including comprehensive screening programs and societal attitudes towards people with disabilities, may contribute to this higher rate.

2. Denmark: Denmark also has a relatively high prevalence of Down syndrome. Early detection and support systems for individuals with disabilities are well-established in the country.

3. Sweden: Sweden has implemented extensive prenatal screening programs, which may contribute to the higher reported Down syndrome prevalence.

4. Norway: Norway has a well-developed healthcare system that provides early detection and support for individuals with Down syndrome.

It's crucial to emphasize that these observations are based on available data, and the prevalence rates can change over time due to various factors such as changes in screening practices, social and cultural norms, and medical advances. For the most up-to-date and accurate information, it is recommended to consult reputable medical sources and organizations that specialize in Down syndrome research and data analysis.