Measles is an acute, highly contagious viral illness caused by a member of the paramyxovirus genus. The virus spreads primarily through airborne droplets when an infected person coughs or sneezes. It remains active and contagious in the air or on infected surfaces for up to two hours. In Nigeria, transmission dynamics are heavily influenced by population density, seasonal shifts, and gaps in routine childhood immunization coverage. Outbreaks frequently occur during the dry season, particularly in crowded urban settlements and rural communities where cold-chain maintenance for vaccines poses logistical challenges.
Once the measles virus enters the upper respiratory tract, it infects epithelial cells and spreads to local regional lymph nodes. A primary viremia follows, seeding the virus to the reticuloendothelial system. After a secondary viremia, the virus targets multiple organ systems, including the skin, conjunctiva, and respiratory tract.
The disease progresses through distinct phases:
The clinical presentation of measles is distinct, starting with the classic triad of cough, coryza, and conjunctivitis, accompanied by a steadily rising fever. A hallmark diagnostic sign of measles is the appearance of Koplik spots—tiny white spots with bluish-white centers on a red base located on the buccal mucosa opposite the lower molars. These spots usually appear a couple of days before the generalized maculopapular rash erupts and vanish shortly after the rash peaks. Midwives can use the presence of Koplik spots to confirm early measles before the skin rash even breaks out.
A thorough nursing assessment involves monitoring vital signs, hydration status, and respiratory effort. Measles suppresses the immune system temporarily, leaving children vulnerable to secondary infections. Common and severe complications include:
There is no specific antiviral cure for measles, so treatment focuses on supportive care and preventing severe complications. Midwives must ensure adequate hydration, monitor nutritional intake, and manage high fevers with safe antipyretics.
World Health Organization protocols mandate the administration of vitamin A supplements to all children diagnosed with measles. The supplement is given orally once daily for two consecutive days to reduce the risk of eye damage and mortality. Antibiotics are reserved only for confirmed secondary bacterial infections such as pneumonia or ear infections, rather than used routinely.
Prevention remains the cornerstone of reducing the disease burden of measles in Nigeria. The primary tool is the measles-containing vaccine (MCV), administered as part of the routine immunization schedule at nine months of age, with a second dose often scheduled during early childhood campaigns. Achieving and maintaining herd immunity requires a vaccination coverage rate of at least 95% within communities. Midwives play a vital role in community mobilization, dispelling myths surrounding routine immunizations, and ensuring cold-chain integrity at primary health care facilities.