United Nations, February 17 (IANS) Thirty-four countries have reported the Zika virus, mostly in the Americas and Caribbean, and seven reported an increase in cases of microcephaly, a senior official from the World Health Organisation (WHO) said. Natela Menabde, the executive director of the WHO Office in New York, on Tuesday told the UN member states during a briefing to the UN Economic and Social Council (ECOSOC) that Brazil has registered more than 4,700 suspected cases of microcephaly and a quarter were only studied for the moment. Before the outbreak of the virus, the average number of microcephaly every year was of 163 cases, Xinhua reported. "The increase we see now is definitely a source of serious concern," she said. Upon the Zika virus outbreak, WHO launched a global strategy to guide the international response to the spread of the virus and the neonatal malformations and neurological conditions associated with it, she said. The strategy, also known as the Strategic Response Framework and Joint Operations Plan, focuses on mobilising and coordinating partners, experts and resources to help countries enhance surveillance of the Zika virus and disorders that could be linked to it, improve vector control, effectively communicate risks, guidance and protection measures, provide medical care to those affected and fast-track research and development of vaccines, diagnostics and therapeutics. She said that $56 million were required to implement the strategy, of which $25 million would fund the joint response of WHO, the Regional Office foe the Americas (AMRO) and the Pan American Health Organisation (PAHO) and $31 million would fund the work of key partners. In the interim, WHO has tapped a recently established emergency contingency fund to finance its initial operations, she said.