A、A mosquito-borne virus. B、A severe chest infection. C、The shortage of medicine. D、Bacteria from Latin America. A

Health officials in Brazil have declared a state of emergency in several states. They are also warning women not to get pregnant. These extreme actions are the result of a recent rise in birth defects. About 2 400 babies in Brazil were born recently with extremely small heads. The babies have a condition called microcephaly. Microcephaly causes severe brain damage. To date, 29 of these babies have died. The number of microcephaly cases in Brazil is about 10 times higher than what the country usually sees in a year. The US Centers for Disease Control and Prevention says the link between a virus infection and microcephaly is being investigated. The virus is spread by mosquitos. Some babies in Brazil with microcephaly have tested positive for the virus while others have tested negative. The CDC says the virus has spread and has caused infections in many Brazilian states and other countries in Latin America.
5. What situation is Brazil facing?
6. How many deaths have been reported so far?
7. What is related to the situation according to the CDC?