Tag Archives: us

Rapidly decreasing immunity of COVID-19 poses a vaccination challenge

LONDON (Reuters) – Emerging evidence that the body’s immune defense against COVID-19 may be short-lived makes it even more difficult for vaccine developers to find vaccines fully capable of protecting people in future waves of infection, Scientists said Tuesday. FILE PHOTO: Professor Gottfried Kremsner injects a coronavirus disease vaccine (COVID-19) …

Read More »

Record floods raise doubts about China’s Three Gorges Dam

SHANGHAI (Reuters) – As China calculates the costs of its harshest flood season in more than three decades, the role played by the controversial and massive Three Gorges dam, designed to help tame the Yangtze River, has come under fire. a new scrutiny. Amid some of the heaviest rains on …

Read More »