If you searched “what does it mean to be incubated,” you’re likely asking about one of two things: being intubated (having a breathing tube placed in your airway) or being placed in an incubator (a controlled environment used for premature babies). These terms sound almost identical but refer to very different medical situations. There’s also a third meaning, the “incubation period” of an illness, which describes the quiet window between catching an infection and feeling sick.
Intubated vs. Incubated: A Common Mix-Up
The word most people mean when they say “incubated” in a hospital context is actually intubated. Intubation (pronounced in-too-BAY-shun) is when a healthcare provider places a flexible tube through your mouth or nose, past your voice box, and into your windpipe to keep your airway open. The tube connects to a ventilator, a machine that pushes air or oxygen into your lungs with controlled pressure. You’d be intubated if something is blocking your airway, your lungs can’t move enough air on their own, or you’re under general anesthesia for surgery.
Being incubated, on the other hand, means being placed inside an incubator. In hospitals, this almost always refers to a newborn, particularly a premature or very small baby, being kept in a clear, enclosed unit that carefully controls temperature, humidity, and sometimes oxygen levels.
What Happens When Someone Is Intubated
During intubation, a provider uses a lighted instrument called a laryngoscope to see into the throat and guide a tube called an endotracheal tube into the correct position in your windpipe. The procedure takes only a minute or two. You’re typically sedated or unconscious, so you won’t feel the tube going in.
Once the tube is in place, it’s secured with tape or a strap and connected to a mechanical ventilator. The ventilator delivers breaths at a set rate, volume, and oxygen concentration. While intubated, you can’t speak because the tube passes between your vocal cords. You’ll also receive medication to keep you comfortable, since the tube can feel irritating if you’re even slightly awake. Nurses monitor your oxygen levels, breathing rate, and lung function continuously.
People are intubated for many reasons: severe pneumonia, respiratory failure, traumatic injuries, drug overdoses that suppress breathing, or as a routine part of major surgery. Some patients stay intubated for hours, others for days or weeks depending on the underlying condition. When your lungs recover enough to breathe independently, the medical team removes the tube in a process called extubation. A sore throat and hoarse voice afterward are normal and usually resolve within a few days.
What a Neonatal Incubator Does
A neonatal incubator is an enclosed, transparent unit designed to keep a premature or sick newborn alive and growing. The core job is temperature control. Premature babies, especially those born before 30 weeks, have very little body fat and can’t regulate their own body heat. Without an incubator, they lose heat rapidly, which forces their tiny bodies to burn calories just to stay warm instead of using that energy to grow.
Modern incubators are surprisingly sophisticated. Microprocessors precisely manage temperature, humidity, and oxygen levels inside the unit. For the smallest and most premature infants (born around 22 to 23 weeks), incubators may start at around 37°C (98.6°F) with humidity near 95%, then gradually decrease to about 34°C and 50% humidity as the baby matures. The goal is to keep the baby’s core body temperature steady between 36.5°C and 37.5°C. Double-walled construction helps maintain stable warmth, and when a nurse opens one of the access ports, an air curtain activates to minimize heat loss.
Noise and light matter too. High noise levels from poorly maintained fans can actually damage a newborn’s hearing over time, so newer incubators include quiet-mode settings that limit internal sound and redirect alarm speakers away from the baby. Light levels are also kept low to support healthy development and sleep cycles.
Can Parents Hold a Baby in an Incubator?
Yes. Most neonatal intensive care units give parents unrestricted access and actively encourage skin-to-skin contact, sometimes called kangaroo care. Even very premature infants benefit from being held against a parent’s bare chest. The incubator is not a barrier to bonding. It’s a home base where the baby returns for consistent warmth and monitoring between holding sessions.
The Incubation Period of an Illness
The other common use of “incubation” is in infectious disease. The incubation period is the gap between when a germ enters your body and when you first feel symptoms. During this time, the virus or bacteria is quietly multiplying inside you. You feel perfectly fine because your immune system hasn’t yet mounted a response large enough to cause inflammation, fever, or other noticeable effects.
Researchers have identified what they call a “stealth phase” at the very beginning of infection. During this window, a virus like influenza can replicate in the lungs for nearly two days without triggering any detectable immune activity. The virus actively suppresses your body’s early-warning system, buying itself time to make more copies. Eventually, the immune system breaks through this suppression, floods the area with signaling molecules, and that’s when you start feeling sick: sore throat, runny nose, fever, fatigue.
Incubation periods vary widely depending on the pathogen. The flu typically takes one to four days. COVID-19 ranges from two to fourteen days, with most people developing symptoms around day five. Chickenpox has a longer incubation period of 10 to 21 days. The length depends on factors like how much of the pathogen you were exposed to, where it enters your body, and how quickly your immune system detects it. One important detail: for many infections, you can be contagious during part of the incubation period, before you even know you’re sick.
Incubation in a Laboratory Setting
Outside the hospital, incubation has a broader scientific meaning. In a research or diagnostic lab, to “incubate” something means to keep biological material, such as cells, bacteria, or tissue samples, under precise conditions so it can grow. A lab incubator is essentially a temperature-controlled box. For human cell cultures, the standard environment is 37°C (normal body temperature) with 5% carbon dioxide in the air. The CO₂ isn’t just filler; it interacts with compounds in the growth fluid to maintain a slightly alkaline pH between 7.2 and 7.4, which cells need to survive and divide.
When your doctor sends a throat swab or blood sample to the lab, the sample may be incubated on a nutrient plate to see what grows. This is how labs identify the specific bacteria causing an infection and determine which treatments will work against it. The incubation step can take anywhere from overnight to several days, which is why some lab results aren’t immediate.