Gastrointestinal Infections

Expert Care for Stomach & Intestinal Infections in Colorado

Digestive health is essential to your overall well-being. Gastrointestinal (GI) infections can cause sudden illness, ongoing discomfort, or serious complications if left untreated. At Infinity ID in Colorado, Dr. Katrina Coulter provides specialized diagnosis and treatment for patients dealing with complex or persistent GI infections.

We are part of:

American Board of Internal Medicine
Colorado Medical Society
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Infectious Disease Services

Gastrointestinal Infections

What Are Gastrointestinal Infections?

Gastrointestinal infections occur when bacteria, viruses, or parasites affect the stomach and intestines. Common causes include contaminated food or water, travel exposure, antibiotic use, or contact with infected individuals.

Common symptoms include

Abdominal pain or cramping

Abdominal pain or cramping

Fever or chills with more severe infections

Fever or chills

Drainage from a wound or surgical site

Drainage from a wound or surgical site

Nausea, vomiting, or diarrhea

Nausea, vomiting, or diarrhea

Infections

Early Treatment

Why Early Treatment Matters

Most GI infections resolve quickly, but some can become serious—especially in children, older adults, and patients with weakened immune systems. Without proper care, they may lead to:

  • Severe dehydration
  • Persistent diarrhea or malnutrition
  • Spread of infection to others
  • Long-term gut health issues (including microbiome imbalance)

Prompt evaluation by a board-certified Colorado Infectious Disease specialist can ensure you receive the right treatment and prevent complications.

How we treat

How We Treat Gastrointestinal Infections

Dr. Coulter provides individualized care using:

 

  • Comprehensive evaluation and stool testing to identify the infection
  • Targeted antimicrobial therapy when needed (antibiotics, antivirals, antiparasitics)
  • Supportive care to restore hydration and electrolytes
  • Guidance on safe foods and prevention of reinfection
  • Collaboration with gastroenterologists if specialized care is needed

 

At Infinity ID, we also emphasize microbiome recovery and gut health restoration when antibiotics or severe infections disrupt balance.

How We Treat Gastrointestinal Infections
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Dr. Katrina

Our Approach

Our Approach

Longer Visits

Time to discuss your full history, travel, and dietary factors.

Collaborative Care

Coordination with surgeons, wound care specialists, and dermatologists as needed.

Convenience

Local Colorado clinic with same-day or next-day appointments.

Transparency

Clear treatment plans, straightforward pricing.

HOW IT WORKS

Getting Started Is Simple

1. Book Your Appointment

Choose a time that works for you — online or by phone. We offer same-day or next-day appointments when available.

Vector 25 1 Gastrointestinal Infections
Vector 25 1 Gastrointestinal Infections

2. Complete Intake Forms

You’ll receive secure digital forms to complete before your visit, so we can make the most of our time together.

3. Send Us Your Records (If Needed)

Once approved, you'll receive access to our secure Tebra portal to complete your intake forms and screening tools

Vector 25 1 Gastrointestinal Infections

4. Meet with 
Dr. Coulter

Receive a thorough evaluation with a board-certified Infectious Disease specialist. You’ll leave with a clear plan and full confidence in your care.

Infectious Disease Services

We take your health seriously — and your privacy too.

All forms, medical records, and communications are fully HIPAA-compliant and 
securely encrypted to keep your information safe and confidential.

FAQs

Frequently Asked Questions

Do all GI infections require antibiotics?

Not always. Many viral and mild bacterial infections resolve on their own. Dr. Coulter determines whether targeted treatment is necessary.

If symptoms are severe, prolonged, or recurrent—or if stool tests show unusual bacteria, parasites, or resistant infections—it’s time to see a specialist.

Yes. Some infections disrupt the microbiome, leading to conditions like post-infectious IBS or dysbiosis. Infinity ID provides microbiome support as part of recovery.

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Still have questions?


We’re here to help.

Specialized Infectious Disease & Wellness Care in Colorado

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Don’t let stomach or intestinal infections disrupt your life. Get expert, local care.