Learn about life expectancy causes diagnosis and symptoms. Learn about microcephaly a genetic abnormality that causes an abnormally small head.
Babies with microcephaly often have smaller brains that might not have developed properly.
Zika small head. This mutation has taken place over the period between 2010 and 2016. This mutation has killed more newborn mice and caused more severe cases of small heads in mice than the others. The zika virus has now spread to nearly all the countries in southern america and across the region.
The spectrum of ways in which microcephaly can affect a child is wide. During pregnancy a baby s head grows because the baby s brain grows. About 10 percent of children are born with normal intelligence and having a small head is mostly a superficial issue.
Microcephaly is a birth defect in which a baby s head is smaller than expected when compared to babies of the same sex and age. Zika virus map microcephaly is a neurological disorder in which the child affected has an abnormally small head which may be due to a failure of brain growth this may result in motor and learning difficulties among other problems as the babies. Zika virus infection during pregnancy is a cause of microcephaly.
Following the 2015 zika outbreak in northeast brazil the brazilian ministry of health moh set up a surveillance system for microcephaly and suspected cases were selected on the basis of small head circumferences. Cape town the asian linked form of zika responsible for abnormal smallness of the head in newborns has been identified in angola. Zika known for abnormal small heads found in africa the asian linked form of zika responsible for abnormal smallness of the head in newborns has been identified in angola.
Microcephaly is also caused if the mother used drugs alcohol had an infection zika virus german measles chickenpox was exposed to toxins or suffered untreated pku while she was pregnant. The scientists found one particular mutation the s139n to be critical in the cause of small heads at birth. Zika virus is known to cause microcephaly a birth defect marked by smaller head and brain size.
Zika virus is spread by daytime active aedes mosquitoes causing a medical condition called microcephaly during which a baby s brain development becomes incomplete resulting in abnormal smallness of the head.