The Chinese-developed Coronavac COVID-19 vaccine has demonstrated a 50 percent efficacy following tests in Brazil, the organization in charge of its production in the South American country said on Tuesday.
Coronavac has been given to frontline health care workers in close contact with coronavirus patients.
The Butantan Institute repeated its claim from last week that the vaccine is 78 percent effective in mild cases that needed treatment and showed 100 percent efficacy in moderate to serious cases.
“It’s a safe, effective vaccine that ticks all the boxes to justify its use in an emergency,” said Butantan director Dimas Covas.
The trial, which was used on 12,500 volunteers, did not produce any adverse effects or significant allergic reactions.
“If the vaccine resisted this test, it’s going to work infinitely better on a community level,” said Ricardo Palacios, the medical manager for clinical trials at Butantan, which is owned by Sao Paulo state and is the largest producer of vaccines in Latin America.
Although the vaccine has reached the minimum efficacy target of 50 percent set by the World Health Organization, it is well behind other vaccines produced by Moderna (94 percent) and Pfizer/BioNTech (95 percent).
Last Friday, Butantan presented the first vaccine authorization request to Brazil’s health regulatory body ANVISA.
It was followed just a few hours later by a request from the AstraZeneca/Oxford vaccine makers.
Coronavac has been at the center of a political dispute between President Jair Bolsonaro, who has repeatedly tried to discredit it, and its backer Sao Paulo state governor Joao Doria, who is expected to challenge the incumbent at next year’s presidential election.
Brazil has recorded more than 203,000 deaths from COVID-19 and over eight million cases among its 212 million population.
Since November it has witnessed a second wave of infections.
Sao Paulo state is due to begin immunizing its 12 million citizens from January 25. Beijing has already sent 10.7 million Coronavac doses and the supplies needed to make another 40 million doses.
Follow the latest news on the coronavirus (COVID-19) outbreak
© 2021 AFP
Chinese coronavirus vaccine shows 50% efficacy in Brazil (2021, January 12)
retrieved 13 January 2021
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.
- Alcohol Plays Role in U.S. Cancer Cases, Deaths: Report - January 21, 2021
- मुख्यमंत्री श्री चौहान द्वारा शहीद हेमू कालाणी को नमन - January 21, 2021
- High Blood Pressure: Why It May Be Safe To Use Homemade Papads And Pickles? Here Is Reason - January 21, 2021
- SAPHO Syndrome Treatment, Symptoms & Causes - January 21, 2021
- The important role of pharmacists for older adults’ health - January 21, 2021
- Are Pricey Air Ambulance Rides Really Saving More Lives? - January 21, 2021
- बर्ड फ्लू की स्थिति नियंत्रण में - January 21, 2021
- What Does It Mean When You Have Liver Pain After Drinking Alcohol? - January 21, 2021
- Researchers identify new genetic disorder that affects brain, craniofacial skeleton - January 21, 2021
- Pot Use Ups Odds for Suicide in Young People With Bipolar Disorder - January 21, 2021