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Sinovac vaccine shows 50.4% efficacy in test

January 14, 2021

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The Philippine Star

SAO PAULO – A coronavirus vaccine developed by China’s Sinovac Biotech was just 50.4 percent effective at preventing symptomatic infections in a Brazilian trial, researchers said on Tuesday, barely enough for regulatory approval and well below the rate announced last week.

Sinovac vaccine shows 50.4% efficacy in test

The latest results are a major disappointment for Brazil, as the Chinese vaccine is one of two that the federal government has lined up to begin immunization during the second wave of the world’s second-deadliest COVID-19 outbreak.

Several scientists and observers blasted the Butantan biomedical center for releasing partial data just days ago that generated unrealistic expectations. The confusion may add to skepticism in Brazil about the Chinese vaccine, which President Jair Bolsonaro has criticized, questioning its “origins.”

“We have a good vaccine. Not the best vaccine in the world. Not the ideal vaccine,” said microbiologist Natalia Pasternak, criticizing Butantan’s triumphant tone.

المزيد من القصص من The Philippine Star

The Philippine Star

Padilla: Bato only hitched a ride

Sen. Robinhood Padilla yesterday denied helping Sen. Ronald “Bato” dela Rosa “escape” from the Senate building hours after gunfire erupted on May 13.

time to read

2 mins

May 23, 2026

The Philippine Star

The Philippine Star

Bato tracker teams mobilized

Dedicated teams from the National Bureau of Investigation (NBI) are hunting down Sen. Ronald “Bato” dela Rosa, a day after the Department of Justice (DOJ) declared that the arrest warrant issued by the International Criminal Court (ICC) is already enforceable.

time to read

2 mins

May 23, 2026

The Philippine Star

HOW ‘THE WONDERFOOLS’ DIRECTOR BATTLED LAUGHTER, SURVIVED FUNNY CAST ON SET

MAKING A SUPERHERO ACTION SERIES like “The WONDERfools” is serious business, given the challenge of mounting action sequences and pressure of making everything look “spectacular” onscreen.

time to read

5 mins

May 23, 2026

The Philippine Star

The Philippine Star

DURING BAD TIMES: Banks told to beef up funds for lending

Banks are now required to set aside capital that can be tapped to support lending during periods of stress — a reform approved by the Bangko Sentral ng Pilipinas (BSP) amid heightened global risks and uncertainties arising from the US-Iran conflict.

time to read

1 mins

May 23, 2026

The Philippine Star

The Philippine Star

LTFRB shifts to P10 per liter fuel subsidy

As service contracting concludes

time to read

1 min

May 23, 2026

The Philippine Star

SM Group hikes RE sourcing to 31%

The SM Group has raised its renewable energy sourcing as it continues to implement cleaner energy use across its businesses.

time to read

2 mins

May 23, 2026

The Philippine Star

A series of unfortunate events

San Jose del Monte (SJDM) in Bulacan has been the victim of a series of unfortunate events in the past few years.

time to read

4 mins

May 23, 2026

The Philippine Star

Over P1 per liter hike in pump prices seen

An upward adjustment of at least P1 per liter is expected at the pumps next week, as ongoing global supply disruptions continue to push prices higher.

time to read

1 min

May 23, 2026

The Philippine Star

The Philippine Star

Claire mocks Pia’s outburst

“Medyo ‘ouch’ siguro.” This was Palace press officer Claire Castro’s take on Sen. Pia Cayetano’s emotional outburst at the Senate plenary on Wednesday, saying the senator appeared to have taken personally Sen. Risa Hontiveros’ remark that it seemed nothing had happened after the May 13 shooting incident inside the chamber.

time to read

1 min

May 23, 2026

The Philippine Star

‘Senate leadership change in the works’

Another leadership change is “in the works” at the Senate, Sen. Panfilo Lacson confirmed yesterday.

time to read

3 mins

May 23, 2026

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