How mosquitoes carry deadly viruses without ever getting sick
By
ByJordan JosephEarth.com staff writer
Summary
This article explores the scientific mystery of why mosquitoes never get sick from the deadly viruses they carry, such as dengue and chikungunya. It explains that viruses deliberately slow down their replication inside mosquitoes, allowing the insects to remain infected for life without experiencing illness, while continuing to spread disease through bites. The piece also notes that climate change and global travel are driving these viruses into new regions.
Source
bskyHow mosquitoes carry deadly viruses without ever getting sickearth.comKey quotes
· 5 pulledA mosquito lands on your arm, bites, and lifts off. Days later you might be flat on your back with fever, your cells under attack from a virus the insect left behind.
The mosquito that delivered it feels none of that. It stays infected for life, bites again and again, and never seems sick from the cargo it carries.
How an insect manages that has puzzled scientists for years.
Dengue, chikungunya and their relatives once stayed in tropical zones. They've been spreading into new regions for years, and they aren't slowing down.
Climate change and global travel explain part of
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