There are several factors that may have contributed to the decline in active COVID-19 cases in the country, leading to a decrease to 1,533. Some of these factors include: 1. Vaccination efforts: The country's vaccination campaign has likely played a significant role in reducing active cases. As more people receive COVID-19 vaccines, the spread of the virus is inhibited, leading to a decline in cases. 2. Public health measures: The implementation and adherence to public health measures such as mask-wearing, social distancing, and regular hand hygiene have helped to curb the transmission of the virus. 3. Improved testing and contact tracing: Expanded testing capacity and effective contact tracing have allowed for the identification and isolation of positive cases, preventing further spread. 4. Natural immunity: The gradual development of natural immunity in individuals who have previously been infected with COVID-19 may have contributed to the decline in active cases. 5. Public awareness and compliance: Increased awareness of the virus and its transmission, coupled with a higher level of compliance with preventive measures among the public, has helped slow the spread of the virus. It is important to note that the decline in active cases may also be influenced by other factors specific to the country's healthcare system, demographics, and government response.