Holidaymakers on The Balmoral cruise ship reportedly had to self-isolate due to an outbreak of gastroenteritis. However, some passengers argued that the reports were exaggerated and most people were actually suffering from seasickness.

Passengers reported frequent tannoy announcements warning about a rise in cases of people with gastroenteritis symptoms. Fred Olsen Cruises’ director of health services, Kate Bunyan, informed The Shetland Times that measures were implemented to minimise transmission onboard before the ship docked in Southhampton on Friday, 30th January. Chronicle Live also reported that the ship’s next departure will be delayed to allow for a comprehensive deep clean while it’s in port.

So what is the real difference between gastroenteritis and seasickness?

Gastroenteritis

Gastroenteritis is a highly infectious bacterial or viral infection that results in diarrhoea and vomiting. It’s particularly prevalent in young children but can affect individuals of all ages.

The symptoms can be extremely unpleasant but usually resolve themselves within a week, according to NHS Inform. Those exhibiting signs of gastroenteritis are advised not to visit their GP to prevent spreading the disease and to call 111 or their GP instead.

• Sudden, watery diarrhoea
• Feeling sick
• Vomiting which may be projectile
• Mild fever
• Loss of appetite, headaches and aching limbs are less common

There’s no specific treatment for gastroenteritis. Individuals may simply have to let the illness run its course while ensuring they get plenty of fluids and rest.

Seasickness

Seasickness is a form of motion sickness that can trigger symptoms similar to gastroenteritis, but it’s not contagious and can typically be alleviated with some simple measures rather than medication. It’s a common reaction to an unfamiliar motion, such as when travelling by boat.

This condition occurs when the inner ear senses motion but the eyes do not, resulting in the brain receiving conflicting messages about what’s happening. For instance, if you gaze at a stationary object like land while on a rocking boat, your inner ear will detect motion that your eyes aren’t perceiving.

• Dizziness
• Feeling sick (nausea)
• Vomiting
• Headache
• Feeling cold and going pale
• Sweating

Pharmacists can suggest remedies to prevent motion sickness such as tablets, patches and acupressure bands. While experiencing seasickness, there are several ways to alleviate the symptoms depending on the cause.

The NHS advises sitting in the middle of the boat where there’s less motion and looking straight ahead at a fixed point like the horizon. Getting fresh air and focusing on taking slow, deep breaths can also be beneficial.