Researchers have developed an intranasal COVID-19 vaccine that enhances the immune system’s response to the virus, providing longer-lasting, greater protection than vaccine injections, even against new and emerging variants. The novel vaccine candidate could mean fewer boosters in future. While the immediate threat of the COVID-19 pandemic has dissipated somewhat, with most returning to their pre-COVID lives, the continued rise of new virus variants means that vaccination is still necessary to protect the vulnerable in the community, such as the elderly and frail and those with pre-existing medical conditions. Breakthrough as hugely promising weight-loss compound made in yeast Although many...