DOT Desk:  A vaccine is still the best way to bring an end to the Covid-19 pandemic, health experts say, adding that pursuing herd immunity would be dangerous.
 Clinical trials of an experimental vaccine against COVID-19 which is being developed by France’s Sanofi and U.S. biotech firm Translate Bio are on track to begin before the end of the year after positive results in tests on animals. Sanofi and Translate Bio said in a statement on Thursday that the results from pre-clinical trials showed two doses of the MRT5500 vaccine induced a “favourable” immune response in mice and monkeys.  Imposing tighter controls to curb COVID-19 contagion could save hundreds of thousands of lives across Europe before February as the continent battles an exponential surge in infections, the World Health Organization said on Thursday.  The proportion of contacts of COVID-19 cases reached by England’s test and trace scheme fell to a record low of 62.6% in the latest week, health ministry statistics revealed on Thursday.