Ringworm is a fungal infection that can occur anywhere in the world. It's not geographically specific, but there are some factors that may contribute to its prevalence in certain areas:

* Climate: Warm, humid climates can provide a suitable environment for the fungus to thrive.

* Crowded living conditions: Overcrowding can increase the risk of transmission.

* Lack of access to hygiene and sanitation: Poor hygiene and sanitation practices can contribute to the spread of the infection.

* Immune system compromise: Individuals with weakened immune systems are more susceptible to ringworm infections.

While ringworm can occur anywhere, it may be more prevalent in regions with these factors.

It's important to note that ringworm is not a worm but rather a fungal infection. The term "ringworm" comes from the characteristic ring-shaped rash it often causes.