What virus is responsible for causing measles?

The virus responsible for causing measles is classified as an RNA virus. This is significant because RNA viruses have different structures and replication mechanisms compared to DNA viruses. Measles virus, specifically, belongs to the Paramyxoviridae family, which is known for its single-stranded, negative-sense RNA. Understanding that measles is caused by an RNA virus helps in recognizing how it spreads, the type of immune response it triggers, and the development of vaccines.

The choice of a bacterium, a fungal agent, or a DNA virus does not align with the virology of measles. Bacteria and fungi are entirely different classes of pathogens that are not responsible for viral infections like measles. Additionally, while DNA viruses do exist, they are not involved in causing measles; rather, they are associated with other diseases. This distinction is crucial for understanding infectious diseases and implementing effective prevention and treatment strategies.