Human Growth and Development / Unit 2 HGD 0193 short lesson, about 20 seconds
Infectious Teratogens
Captions available
The idea
Infections can act as teratogens, among them rubella in the first three months, cytomegalovirus, syphilis, toxoplasmosis, the Zika virus and HIV.
In practice
Zika infection causing microcephaly, an unusually small head, in exposed infants.
Where people slip
Antiviral treatment cuts HIV transmission to a newborn below five percent. Listeria, a bacterium found in some foods, is another risk.
Your place on the trail
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