Читать книгу 101 Hikes in Northern California. Exploring Mountains, Valleys, and Seashore онлайн

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Caused by a spirochete, Lyme disease is potentially life threatening and can be hard to diagnose in its early phases. Common early symptoms include fatigue, chills and fever, headache, muscle and joint pain, swollen lymph nodes, and a blotchy skin rash that clears centrally to produce a characteristic ring shape 3–30 days after exposure. If you fear that you have been exposed to Lyme disease, consult a doctor immediately. Note that the majority of infected people never see the tick that bit them.

Giardia

Giardia lamblia is a microscopic organism occasionally found in backcountry water sources. Existing in a dormant cyst form while in the water, the critter develops in the gastrointestinal tract upon being consumed and can cause diarrhea, excessive flatulence, foul-smelling excrement, nausea, fatigue, and abdominal cramps. While the risk of contraction is very slight, the potential consequences are worth preventing. All water taken from the backcountry should be purified with a filter, with a chemical treatment, or by boiling for a minimum of 60 seconds. Be especially vigilant about water sources near heavily used camping areas.