A nurse is caring for a child with measles and anticipates administering which supplement?

Choice A rationale:

Nucleoprotein (N) and phosphoprotein (P) are not responsible for viral entry and fusion in measles infection. These proteins are involved in viral replication and assembly, not the initial entry into host cells.

Choice B rationale:

Matrix protein (M) and large protein (L) are not responsible for viral entry and fusion in measles infection. The matrix protein plays a role in the assembly and structure of the virus, while the large protein is involved in viral replication and transcription.

Choice C rationale:

Fusion protein (F) and hemagglutinin protein (H) are the primary proteins responsible for viral entry and fusion in measles infection. The hemagglutinin protein allows the virus to bind to specific receptors on host cells, while the fusion protein facilitates the fusion of the viral envelope with the host cell membrane, allowing the virus to enter the cell.

Choice D rationale:

Nucleoprotein (N) and matrix protein (M) are not directly involved in viral entry and fusion. Nucleoprotein plays a role in protecting the viral RNA, and the matrix protein is involved in viral assembly and budding.

Choice A rationale:

Encouraging the client to avoid exposure to sunlight is not a preventive measure for measles. Measles is a viral infection transmitted through respiratory droplets, not sunlight exposure. Sunlight exposure is important for the synthesis of vitamin D and has no direct relation to measles prevention.

Choice B rationale:

Advising the client to avoid contact with people who have a common cold is not a preventive measure for measles. While respiratory infections might have similar symptoms to measles, the viruses causing them are different, and avoiding people with a common cold would not protect against measles.

Choice C rationale:

Suggesting the client receive the live attenuated measles vaccine as part of the MMR combination is the correct preventive measure for measles. The MMR vaccine contains live but weakened forms of measles, mumps, and rubella viruses. It provides immunity against these diseases and is highly effective in preventing measles infection.

Choice D rationale:

Recommending taking antibiotics prophylactically is not appropriate for measles prevention. Measles is a viral infection, and antibiotics are only effective against bacterial infections, not viral ones. Prophylactic use of antibiotics can lead to antibiotic resistance and is not indicated for preventing measles.