The seven overdoses in one area overnight have filed with Seattle and King, which issue a public health alert on Thursday.
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"There are overdoses that happen everyday but what is unusual in that, is that these overdoses have occurred only within a few hours, and in a relatively small area, "Seattle and King Jeff Duchin of Public Health County told KIRO radio
Although the original cause of overdoses was not identified at once, there are suspicions that the recent e rates of contaminated drugs may be to blame. The six overdoses reported that some victims injected what they considered heroin, and others a deadly pill that may be fentanyl. Fentanyl can be found in fake pills made to look like prescribed opiates like oxycodone. The risk comes from the fact that fentanyl is 30 to 50 times stronger than pure heroin;
Data released by the State Department of Health of Washington last December note that overdoses of fentanyl have increased by nearly 70% over the previous year.
Seattle and the King County advise people using illegal drugs to take extra care, not just use drugs, and have naloxone ready to counter the early effects of overdose.