Tuesday, Nov. 3, 2026 A Vik Media Group publication
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Developing story/Immunity

Infections and vaccines after 50

9 articles · following since Nov. 3, 2026 · last update Nov. 3, 2026

Every update, newest first

  1. In older adults with a cough in Argentina, whooping cough was rare; viruses were common

    A multicenter study in Argentina, published in 2026 in Medicina (Buenos Aires), found whooping cough bacteria in only 1 of 391 adults with a recent cough, while viruses were common and hospitalization was linked to other illnesses.

  2. Most typhoid cases in the US resisted a common antibiotic, and most came from travel

    A CDC study published Oct. 1, 2026, in JAMA Network Open found that most typhoid and paratyphoid infections diagnosed in the US from 2016 to 2020 were not susceptible to ciprofloxacin, and 81.9% of patients had traveled or lived abroad.

  3. Smokers had higher odds of drug-resistant infections, mostly tuberculosis, a review finds

    A meta-analysis of forty-three studies, published Oct. 7, 2026, in Frontiers in Public Health, linked a history of smoking to higher odds of antibiotic-resistant infection (odds ratio 1.66), with most evidence from drug-resistant tuberculosis.

  4. An RSV vaccine cut hospital stays in older adults, with most to gain for weak immunity

    In an analysis of the Danish DAN-RSV trial, published in The Lancet Healthy Longevity in October 2026, RSV hospitalization was more than nine-fold higher in unvaccinated older adults with weakened immunity, and the vaccine's overall effectiveness was 83.3%.

  5. An mRNA RSV vaccine was linked to fewer RSV hospital stays in veterans 50 and older

    In a study of US veterans 50 and older, published Oct. 1, 2026, in JAMA Network Open, the mRNA-1345 RSV vaccine had an estimated effectiveness of 81.8% against RSV hospitalization in one season, with lower protection in the oldest group.

  6. Exercising around your flu shot didn’t clearly boost antibodies, a review finds

    A meta-analysis of twenty-two reports, published Oct. 8, 2026, in Frontiers in Immunology, found that randomized trials don't show that exercise before a flu shot, or regular training, clearly improves antibody responses, but benefit can't be ruled out.

  7. Nearly 30% of adults admitted exaggerating or inventing symptoms to get antibiotics

    In a US survey published Oct. 1, 2026, in JAMA Network Open, 27.9% of adults said they had misrepresented symptoms to a clinician to get antibiotics, most often for cold-like symptoms.

  8. Volunteers given a weakened dengue virus showed how past immunity shapes infection

    In a phase 1 trial published Oct. 28, 2026, in Science Translational Medicine, 45 healthy adults were infected with a weakened dengue virus. People's existing antibodies and T cells shaped how much the virus grew and how strong and lasting…

  9. A daily handful of almonds raised flu vaccine antibodies, but not protection rates

    In a randomized trial published Oct. 26, 2026, in the American Journal of Clinical Nutrition, healthy adults who ate 56 g of almonds a day had higher antibody levels against one flu strain after vaccination than those who ate pretzels.…