The top 10 countries with the most efficient response to COVID-19 can vary depending on the criteria used to measure efficiency. However, considering some commonly accepted indicators like low infection rates, effective testing and contact tracing, comprehensive healthcare responses, and successful containment measures, the following countries have been recognized for their efficient response to COVID-19:
1. New Zealand
7. South Korea
Please note that the situation is dynamic, and this list may change as new data and developments arise.