An Indian pharmaceutical firm claimed on Wednesday to have developed the world's first vaccine against mosquito-borne Zika virus.

Biotech International Limited, the company, based in the southern Indian state of Andhra Pradesh's capital Hyderabad, said it has already filed for a patent for the Zika vaccine.

"On Zika, we are probably the first vaccine company in the world to file a vaccine candidate patent about nine months ago," Dr. Krishna Ella, head of the pharma firm, told the media.

The firm has sought the Indian government help for carrying out human and animal trials for the two candidate vaccines, which have been developed by its scientists, using a live Zika virus.

The claims came a day after the World Health Organization said the Zika virus poses a global public health emergency requiring a united response.

The virus has been linked to cases of microcephaly, in which babies are born with underdeveloped brains. There have been around 4,000 reported cases of microcephaly in Brazil alone since October.

However, till date, there has been not a single reported case of Zika virus attack in India, though the government is said to have tested a number of samples.