The Canadian government has actually said it:
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Canada's chief public health officer is warning travellers, especially the elderly and those with fragile health, to reconsider going on cruises after cases of the coronavirus were confirmed on a cruise ship which has Canadians on board.
"Think twice about going on cruise ships," said Dr. Theresa Tam on Friday, noting they "present environments where COVID-19 can spread easily given close contacts between passengers and crew for significant periods of time."
Tam said that even if people on a cruise do not contract the virus they could be quarantined by destination countries for extended periods of time, increasing the risk of infection.
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source:
https://www.cbc.ca/news/politics/coronavirus-cruise-grand-princess-1.5489320
In addition, the CDC has increased their advice for those at higher risk of COVID-19 complications [
https://www.cdc.gov/coronavirus/2019-ncov/specific-groups/high-risk-complications.html ]:
(note from that CDC page you can get to a lot of other excellent information, including preparing your household, how to care for someone who is sick, etc)
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What to do if you are at higher risk:
- Stay at home as much as possible.
- Make sure you have access to several weeks of medications and supplies in case you need to stay home for prolonged periods of time.
- When you go out in public, keep away from others who are sick, limit close contact and wash your hands often.
- Avoid crowds.
- Stay up to date on CDC Travel Health Notices.
Who is at Higher Risk
Older adults and people who have severe chronic medical conditions like heart, lung or kidney disease seem to be at higher risk for more serious COVID-19 illness. Early data suggest older people are twice as likely to have serious COVID-19 illness. This may be because:
- As people age, their immune systems change, making it harder for their body to fight off diseases and infection.
- Many older adults are also more likely to have underlying health conditions that make it harder to cope with and recover from illness.
If a COVID-19 outbreak happens in your community, it could last for a long time. Depending on the severity of the outbreak, public health officials may recommend community actions to reduce exposures to COVID-19. These actions can slow the spread and reduce the impact of disease.
If you are at increased risk for COVID-19 complications due to age or because you have a severe underlying medical condition, it is especially important for you to take actions to reduce your risk of exposure.
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