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The black-legged tick is the vector that spreads Lyme disease. Its bite can infect humans with the Borrelia burgdorferi bacterium. (Jim Gathany/CDC)

Lyme disease: The pathogen’s cunning strategies for persistent infection offer clues for vaccine development

The bacterium that causes Lyme disease is a master of disguise, changing its appearance to evade the immune system as it moves from the ticks that carry it to humans or animals.
The CDC expects the updated shots to be effective at preventing severe COVID-19, even in the face of new variants. Teka77/iStock via Getty Images Plus

CDC greenlights two updated COVID-19 vaccines, but how will they fare against the latest variants? 5 questions answered

Only time and data will tell whether the CDC-recommended reformulated shots can stand their ground against the ever-changing SARS-CoV-2 variants.
Widespread skepticism toward COVID-19 vaccines took some scientists by surprise. Eric Lee/The Washington Post via Getty Images

Religion shapes vaccine views – but how exactly? Our analysis looks at ideas about God and beliefs about the Bible

Specific beliefs may have more to do with people’s vaccine views than their religious affiliation – but it depends on which vaccine you’re talking about.
More than 70 per cent of the world’s population has received at least one COVID-19 vaccination. (Shutterstock)

The first line of vaccines was highly effective at restricting COVID-19’s damage

New analysis answers questions about the ongoing effectiveness of COVID vaccines: How well they protect against infection, hospitalization and death months after initial doses or after a booster shot.
Vaccines help protect farm animals from various diseases. dusanpetkovic/iStock via Getty Images Plus

Vaccines using mRNA can protect farm animals against diseases traditional ones may not – and there are safeguards to ensure they won’t end up in your food

While mRNA vaccines are designed to last longer in the body than mRNA molecules typically would, they are also tested to ensure they are eliminated from livestock long before milking or slaughter.
For much of the 20th century, Americans were used to seeing people bearing the signs of past polio infection. Genevieve Naylor/Corbis via Getty Images

‘Got polio?’ messaging underscores a vaccine campaign’s success but creates false sense of security as memories of the disease fade in US

Polio vaccines have been a massive public health victory in the US. But purely celebratory messaging overlooks the ongoing threat if vaccination rates fall.

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