Acute intestinal infections during the summer period - causes, prevention, and management

Acute intestinal infections represent a significant challenge for the healthcare system, especially during the hot season of the year. In the summer months, there is a sharp increase in visits to infectious disease specialists, and in complicated cases patients often require emergency inpatient care. The present article aims to discuss the causes of exacerbation of acute intestinal infections in summer, routes of transmission, risk groups, clinical course, and effective prevention methods.

Why do intestinal infections worsen in summer?

The exacerbation of acute intestinal infections during the summer period is due to several interrelated factors. High environmental temperature promotes the rapid multiplication of microorganisms - viruses, bacteria, and parasites - in food and water. Gastroenteritis, an inflammatory process of the digestive tract, is caused by these pathogens and is mostly transmitted via the fecal-oral route.

In summer, human mobility increases, visits to resorts become more frequent, and people spend time in crowded gathering places. These factors increase the likelihood of contact with infected individuals, which under inadequate personal hygiene conditions promotes the spread of infection. Therefore, acute intestinal infections are especially relevant in the spring-summer period.

How is intestinal infection transmitted?

The main route of transmission is the consumption of contaminated water or food. Person-to-person transmission is also quite common, especially under inadequate hygienic conditions. The transmission mechanism is fecal-oral, meaning that pathogens enter the body through contaminated hands, objects, food, or drinks.

Viral gastroenteritis may spread through handshaking with an infected person, contaminated objects, or food (for example, unpasteurized milk). To prevent further spread of infection, the infected person must strictly follow hygiene norms for at least 48 hours after symptoms subside.

Risk Groups

Acute intestinal infections occur in all age groups - infection is possible in both children and elderly individuals. However, special risk groups include:

• Young children: their immune system is still in the process of formation;
• Elderly individuals: immunity weakens with age;
• Individuals with compromised immune status: patients with chronic diseases or those undergoing immunosuppressive therapy.

In these groups, the course of the disease is often more severe and the risk of complications is higher.

Clinical Course and Symptoms

The clinical picture and severity of acute intestinal infection vary depending on the causative agent and the patient’s individual characteristics. The disease usually begins acutely and presents with the following symptoms:

• Nausea and vomiting;
• Abdominal pain and spasms;
• Frequent bowel movements (diarrhea), which may occur with or without blood and mucus;
• Arthralgia (joint pain) and myalgia (muscle pain);
• Increase in body temperature (from normal to high values).

At the onset of the disease, pronounced signs of intoxication and dehydration are often observed. This condition frequently requires active fluid therapy in an inpatient setting and, if necessary, antibiotic therapy.

Prevention - How to Avoid Infection?

To prevent acute intestinal infections, strict hygiene norms and food safety measures must be followed:

Personal hygiene:

• Thorough hand washing before and after eating;
• Hand washing after using the toilet, contact with animals, and handling raw meat.

Food safety:

• Proper washing of vegetables and fruits under running water;
• Avoidance of street food;
• Consumption only of properly heat-treated food;
• Avoidance of unpasteurized milk and dairy products.

Limiting contact:

Avoid contact with individuals who show symptoms of acute intestinal infection.

Diagnosis and proper management are carried out by an infectious disease specialist on an outpatient basis or, if necessary, in an inpatient setting. Therefore, in case of prolonged or worsening symptoms, timely referral to a specialist is important. Timely verification of diagnosis prevents severe complications and promotes rapid recovery.

Author: Khatia Khatiashvili - Infectious Disease Specialist