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Ians

Washington: The antiviral drug telbivudine prevents perinatal transmission of hepatitis B virus (HBV), a new study says.

Hepatitis B virus, which has infected nearly two billion people worldwide, is a leading cause of liver disease.

"If we are to decrease the global burden of hepatitis B, we need to start by addressing mother-to-infant transmission, which is the primary pathway of HBV infection," said study author Yuming Wang from Institute for Infectious Diseases, Southwest Hospital, Chongqing, China.

"We found that telbivudine not only eliminated vertical transmission of HBV from pregnant women to theirs infants, but that it is also safe and well tolerated by women and infants," Wang said.

Researchers carried out a prospective study of 450 HBV-positive pregnant women with high viral load, or significant HBV in the blood, during the second or third trimester of pregnancy.

Out of them, 279 received telbivudine (600 mg daily) during weeks 24 through 32 of gestation, and 171 women who were unwilling to take antiviral drugs participated as controls.

At six months after birth, none of the infants whose mothers were given telbivudine tested positive for HBV, compared to 14.7 percent of infants in the control group.

Almost a quarter of the mothers who received telbivudine had no HBV detectable in their system. Those not on the antiviral medication all tested positive for HBV.

A significantly higher proportion of women given telbivudine had undetectable levels of HBV DNA in cord blood (99.1 percent) than controls (61.5 percent).

"No severe adverse events or complications were observed in women or infants. The long-term influence of using telbivudine, especially when compared to the other recommended oral antiviral drug, tenofovir, remains to be explored," said Wang.

The study appeared in Clinical Gastroenterology and Hepatology,

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