The World Health Organization (WHO) has said the Zika outbreak in Brazil has forced the government to take emergency measures.
The UN agency has urged the country to declare a public health emergency, but the government has refused.
“We will take any necessary measures necessary to contain the outbreak,” health minister Ana Minhas said on Thursday.
She said the country was “taking steps to combat the spread of the virus”, which is a new one in Brazil.
“It is urgent to address the spread and prevent transmission,” she said.
“Brazil must be prepared to act quickly to contain a pandemic.”
WHO said it has received more than 400,000 Zika cases in Brazil, with more than 7,300 deaths, of which more than 2,500 were linked to the virus.
Some countries have also reported more cases, although there is no conclusive evidence yet that the virus is causing a pandemically high number of infections.
In the first 24 hours of the outbreak, Brazil had recorded more than 10,000 new cases.
The virus can only be contracted by direct contact with infected mosquitoes.
The outbreak in the Americas, Europe and Asia was sparked by a man who tested positive for the virus and was tested for it in Brazil in October.
On Wednesday, Brazil’s President Dilma Rousseff said the outbreak was a global pandemic and that the country would be “more than ready” to help contain it.
In a statement on Thursday, Ms Rousseff thanked “the health services and other partners” in the country, and promised to work together to fight the spread.
The Zika outbreak has forced Brazil to launch a state of emergency and declare a nationwide emergency.
The country has more than 12 million people, according to the UN, and the WHO says more than 1.5 million people have been infected with the virus so far.
The government has asked the UN to extend the deadline to 26 February.
Brazil has reported more than 4,800 new cases in the first day of the new outbreak, but it has reported no new confirmed cases, according the World Health Organisation.
Brazil is not the only country to have been hit by the virus, with the WHO saying more than 40 countries are now in the “pandemic stage” of the pandemic.