A Short-Lived Zika Virus Epidemic Occurred in Brazil in 2014

A short-lived Zika virus epidemic occurred in Brazil in 2014, followed by a smaller outbreak in the United States in 2016. The history of the Zika virus supports which conclusion about viral STIs?

A) Newly emerging viruses will likely be less dangerous than earlier viruses, such as HIV.
B) Viruses are either sexually transmitted or not; they cannot be transmitted in multiple ways.
C) Sexually transmitted viruses, such as Zika, are not dangerous and can usually be ignored.
D) New, potentially dangerous viruses can emerge at any time and may be transmitted in more than one way.
E) Zika-type viruses are only a danger in tropical areas, such as Brazil, not in the United States.