A virus that once paralyzed tens of thousands of children a year is said to have been eradicated on the African continent, though a minor strain still infects hundreds.
Tag: Vaccination and Immunization
First Documented Coronavirus Reinfection Reported in Hong Kong
The patient did mount an immune response to the new infection, however, and did not experience symptoms.
Russia Is Miffed by Cool Reception for Coronavirus Vaccine
Russian officials and scientists dismiss warnings about safety as Western jealousy and sour grapes. But only 24 percent of Russian doctors would take the vaccine, one survey shows.
Covid-19: What if ‘Herd Immunity’ Is Closer Than Scientists Thought?
In what may be the world’s most important math puzzle, researchers are trying to figure out how many people in a community must be immune before the coronavirus fades.
Coronavirus Crisis Has Made Brazil an Ideal Vaccine Laboratory
Widespread contagion, a deep bench of scientists and a robust vaccine-making infrastructure have made Brazil an important player in the quest to find a vaccine.
Coronavirus Briefing: What Happened Today
Russia says it will begin administering a vaccine that has not completed its testing.
Russia Approves Coronavirus Vaccine Before Completing Tests
The country became the first in the world to approve a possible vaccine against the virus, despite warnings from the global authorities against cutting corners.
Russia Approves Coronavirus Vaccine Before Completing Tests
The country’s regulators became the first in the world to approve a possible vaccine against the virus, despite warnings from the global authorities against cutting corners.
Canada Has Placed Its First Vaccine Order, but Don’t Expect a ‘Silver Bullet’
Before the federal government announced an order for millions of doses of a still unproven vaccine, its top doctor sounded a note of caution.
Russia Sets Mass Vaccination for October After Shortened Trial
The announcement raised concerns that Russia would begin inoculations and declare victory in the race for a coronavirus vaccine without fully testing its product.