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About a quarter of parents have lied to others about their child’s COVID-19 positivity status, according to a study published Monday in the medical journal JAMA Network Open. The national, online, noprobability survey in December 2021 asked parents if they had ever engaged in seven types of misrepresentation and nonadherence behaviors regarding COVID-19 public health measures for their children: Yes, they'd been dishonest about their child’s health or vaccination status, roughly 1 in 4 told the researchers. And 1 in 5 allowed their child to break quarantine rules at the height of the pandemic. (Vaziri and Beamish, 3/6)

The most common untruth was not telling someone who was going to spend time with their child that they knew or suspected the child had COVID-19 (63 of 263 [24.0%]), and the most common adherence failure was allowing their child to break quarantine rules (67 of 318 [21.1%]). A total of 19.4% of parents didn't have their child tested for COVID-19 when they suspected infection. Just over half of parents who lied (52.4%) said they exposed others to their ill child because they wanted to exercise their parental autonomy, while others said their child didn't feel very sick (47.6%), they didn't want to miss a fun event to stay home (44.4%), or they didn't want their child to miss school (42.9%). (Van Beusekom, 3/6)

Covid-19 bivalent boosters’ protection against death and hospitalization in elderly people began waning as soon as two months after vaccination, according to a preprint study. (Muller, 3/6)

Moderna Inc. Chief Executive Stéphane Bancel pushed back against criticism of the company’s pricing plans for its Covid-19 vaccine at Monday’s Wall Street Journal Health Forum. ... The chief executive said the company’s mRNA platform was funded by investors, not the government, and the public funding accelerated development of the vaccine. (Hopkins, 3/6)