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1624

Lyme disease in the US is caused by the spirochete Borrelia burgdorferi, which is transmitted to humans by Ixodes scapularis (blacklegged [deer] tick) and I. pacificus (western blacklegged tick). Most cases of Lyme disease occur in late spring and early summer in northeastern and mid-Atlantic states, the upper Midwest, and in northern California. B. mayonii, which is also transmitted by I. scapularis, has been shown to cause a similar illness in the upper Midwest.1-3

THE DISEASE — Erythema migrans, the characteristic skin lesion of Lyme disease, develops at the site of the tick bite in about 80% of patients with...  Continue reading

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Previous Issue: 1623      May 3, 2021
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On May 10, 2021, the FDA expanded its Emergency Use Authorization (EUA) for the Pfizer/BioNTech mRNA-based COVID-19 vaccine to include adolescents 12-15 years old.1 The vaccine has been authorized for use in persons ≥16 years old since December 2020.2

Expansion of the EUA was based on the results of an ... Continue reading

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