A researcher from a US laboratory went back to work after contracting the Zika virus sticking with a needle during an experiment in the last month, the US ABC News television network on Thursday.
There is no vaccine or treatment for Zika, which is a close cousin of diseases such as chikungunya and dengue fever and causes mild, skin irritation and redness. About 80 percent of infected people have no symptoms.
The researcher Unidentified University of Pittsburgh was polluted on May 23 and showed symptoms on June 1, returning to work five days later when no longer had fever, reported ABC News, citing a statement from the educational institution.
No university authority was immediately available to comment.
The incident is the fourth confirmed case of Zika virus in Allegheny County, said the local health department, without giving details of what happened
"Despite this rare incident, there is still today no risk of contracting Zika mosquitoes in Allegheny County," said the director of the department, Karen Hacker said in a statement.
US health authorities have concluded that Zika infections in pregnant women can cause microcephaly, a cranial malformation. The ratio of Zika cases of microcephaly in babies was first registered in Brazil last year.
The World Health Organization (WHO) said there is a strong scientific consensus that Zika can also cause Guillain-Barré syndrome, a rare neurological disorder that causes temporary paralysis in adults.
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