&quot;may be the cause&quot;<p>&quot;may want to hold off&quot;<p>&quot;may have to do with the complicated effects ...&quot;<p>They need some definitive answers.<p>The incidence of microcephaly is 1.02 per 10,000 births in the UK 2002 for microcephaly (University of Ulster, 2003).
[ source : <a href="http:&#x2F;&#x2F;www.rightdiagnosis.com&#x2F;m&#x2F;microcephaly&#x2F;prevalence.htm" rel="nofollow">http:&#x2F;&#x2F;www.rightdiagnosis.com&#x2F;m&#x2F;microcephaly&#x2F;prevalence.htm</a> ]<p>Birth rate in Brazil is 14.5 per 1000 births.(<a href="https:&#x2F;&#x2F;www.cia.gov&#x2F;library&#x2F;publications&#x2F;the-world-factbook&#x2F;rankorder&#x2F;2054rank.html" rel="nofollow">https:&#x2F;&#x2F;www.cia.gov&#x2F;library&#x2F;publications&#x2F;the-world-factbook&#x2F;...</a>)<p>Population of Brazil is 190,000,000.
They&#x27;re claiming 2400 cases in this emergency.<p>Do the math.  (as child threader indicates, it is high)<p>Finding Zika virus a small number of cases is not a clear answer.