All living organisms mutate and adapt to maximize survival in their ecologic niche. For months, scientists have been looking into whether the novel coronavirus — known as SARS-CoV-2 — is mutating and becoming more transmissible or more lethal. Recent evidence points to a preliminary answer to half the question: yes, a study has found that the virus has mutated and the dominant strain today is now capable of infecting more human cells. But the scientists say more research is needed to show whether this changed the course of the pandemic, and it remains unclear whether this mutation is more lethal.
Since December, the virus has spread to nearly every continent and case numbers continue to rise.
Authorities in 214 countries and territories have reported about 7.6 million Covid‑19 cases and 422,000 deaths since China reported its first cases to the World Health Organization (WHO) in December.
Palme was gunned down as he took a late-night walk after visiting a cinema in central Stockholm with his wife, Lisbet, on February 28, 1986.
The mystery over the murder of the Social Democratic leader has gripped Sweden for three decades, prompting much speculation over the assassin and their motive, as well as producing multiple conspiracy theories.
Meanwhile, investigators have interviewed more than 10,000 people, and 134 possible suspects have confessed to the murder.
Sweden’s Chief Prosecutor Krister Petersson told a news conference in the country’s capital on Wednesday that he believed the lone perpetrator to be a man named Stig Engström but could do nothing more to prove it.
“As the person is deceased, I cannot bring charges against him and have decided to discontinue the investigation. In my opinion, Stig Engström is the prime suspect,” he said.
“My assessment is that, after over 34 years, it is difficult to believe that any further investigation would provide us with any new details and therefore I believe we have come as far as one could expect.”