The disease quickly gained the upper hand. But as COVID-19 numbers came under control, fewer people wore masks, and many attended large gatherings. Strict mask mandates there had reined in the country’s first wave of infections last September. But changes need to be made carefully.Īround the same time that New Hampshire rescinded its rule, for example, COVID-19 cases in India began to surge. Officials should begin relaxing restrictions to give people hope and to motivate vaccination, she says. Gandhi is among those who emphasize that mask messaging should evolve in light of rising vaccination rates. As the COVID-19 pandemic enters a new phase, scientists around the world are accessing the accumulated data and asking what makes some policies more effective than others, and probing when and how they need to change.
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So researchers are trying to get a handle on what the science says about how to encourage people to wear them. Mask use will continue for this pandemic, and it’s likely to become a common response to future outbreaks. Hoen and other epidemiologists warn that it is very difficult to reinstate a rule after it has been revoked. And now, after the CDC released its latest revision, agency director Rochelle Walensky noted that it could change its mask guidance yet again. It wasn’t until late April, for example, that the US government finally distinguished between indoor and outdoor mask use in its recommendations, even though the science had been clear for months that the risk of transmission was much lower outdoors 2. How COVID is changing the study of human behaviour “That’s been the problem this entire pandemic. “We’re all over the map,” says Monica Gandhi, an infectious-disease physician at the University of California, San Francisco. A patchwork of policies and mixed messages from both politicians and public-health officials has resulted in confusion, consternation and a mess of data to interpret. Meanwhile, infection rates in some places have increased. Average mask use across the United States has been declining since mid-February. The evidence is clear that masks cut down on COVID-19 deaths, but nearly a year and a half into the pandemic and with vaccination coverage climbing in many places, public-health scientists and officials are still struggling to get people - particularly unvaccinated people - to wear masks at appropriate times. Spain tightened its requirements at the end of March. It was facing a slowdown in vaccination rates and a surge in cases. Germany strengthened its mask requirements at the end of April, for example. The weakening policies are out of step with those of many other countries. In the wake of the CDC’s announcement, Vermont Governor Phil Scott relaxed the mandate for fully vaccinated individuals. Hoen works in New Hampshire but lives just across the border in Vermont, where a state-wide indoor mask mandate remained in force until mid-May, despite Vermont having a lower rate of hospitalizations than practically anywhere else in the country. She says that both the state and federal moves were probably a little too early. “Until we feel better about the state of things - until the numbers make a little bit more sense to us, we have decided to wait,” she says, even if that means dealing with testy customers.Īnne Hoen, an epidemiologist at Dartmouth College in nearby Hanover, can understand Perkins’s caution. She also knows that several customers have immune systems that are compromised, and emerging research suggests that people in this group are still at risk even after vaccination 1. Even after the CDC announced its latest guidelines - just two weeks after communicating that vaccinated people should continue to mask up indoors - Perkins wasn’t personally comfortable with unmasked people in her shop. Cities and businesses in New Hampshire could still set their own policies, and Perkins wasn’t comfortable changing things right away. And on 16 April, it became the first in the region to lift that mandate, joining several other states around the country that were loosening their pandemic-related restrictions. New Hampshire was the last state in New England to start mandating mask wearing in public to reduce the spread of the coronavirus SARS-CoV-2. We were not about to start asking people if they are vaccinated or not.” “We weren’t expecting that,” says Perkins. A sign is still posted on the front door of the Wolfeboro Food Co-op that reads, “Face masks required.” Until recently, another sign had hung directly below it, explaining how the New Hampshire market was following federal policy.Įrin Perkins, manager of the shop, removed that second sign on 14 May - the day after the US Centers for Disease Control and Prevention (CDC) announced that fully vaccinated individuals, in most situations, no longer need to wear a mask.
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