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Sunday, May 31, 2020  Spokane, Washington  Est. May 19, 1883
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Health officials probe tie between Zika, paralyzing syndrome

A graduate student works on analyzing samples to identify the Zika virus in a laboratory at the Fiocruz institute in Rio de Janeiro on Friday. (Leo Correa / AP)
A graduate student works on analyzing samples to identify the Zika virus in a laboratory at the Fiocruz institute in Rio de Janeiro on Friday. (Leo Correa / AP)
Marcos Aleman

SAN SALVADOR, El Salvador – Health officials say they’re trying to determine if an unusual jump in cases of a rare nerve condition sometimes severe enough to cause paralysis is related to the spread of the mosquito-borne Zika virus in at least two Latin American countries.

Fears the illness might be causing thousands of birth defects already have led authorities in Brazil, Colombia and El Salvador to take the drastic step of warning women against becoming pregnant. The U.S. Centers for Disease Control and Prevention on Friday expanded its warning for pregnant women thinking of visiting 22 destinations, most in Latin America and the Caribbean.

But concern also has been rising about a potential link to Guillain-Barre syndrome, a nerve disorder that can affect anyone. It causes muscle weakness, tingling in the arms and legs and sometimes temporary paralysis. Most people recover fully, but severe cases that affect muscles used to breathe can be life-threatening.

It’s thought to occur when someone’s immune system overreacts and attacks its own nervous system cells, often after various types of infections.

Researchers have been suspicious of the virus since French Polynesia noted a jump in cases of Guillain-Barre and microcephaly, in which a child is born with a small head, that accompanied a wave of Zika cases, though the populations were far smaller than in the recent outbreaks.

The World Health Organization said Salvadoran authorities reported 46 cases of Guillain-Barre in just five weeks, from Dec. 1 to Jan. 6. The full-year average for the country is 169 cases. It said that of 22 patients on whom there was information, at least 12 patients had experienced a rash-fever illness in the 15 days before developing Guillain-Barre.

Brazilian officials too have said they’re investigating a link between Guillain-Barre and Zika.

Dr. Antonio Bandeira, an infectologist with the Couto Maia Hospital in the northeastern city of Salvador, said that during last year’s rainy season, when a Zika outbreak was at its peak, he had an unusual spate of patients with Guillain-Barre.

“Zika was really bad here from February to July and then all but disappeared in August. In May, June and July, we had 24 patients come in with Guillain-Barre, and none since August,” he said, adding that in previous years he generally only saw two or three patients with the condition per year.

Nationwide, Guillain-Barre had been so rare that the Health Ministry doesn’t track the exact number of cases. Still, officials here acknowledge the rise.

Local transmission of the virus was first formally confirmed in the Americas only nine months ago in Brazil, where officials became alarmed by a sudden rise in cases of microcephaly.

Since the start of October, the country has recorded 3,893 cases of microcephaly, compared with 150 cases for all of 2014.

Brazilian officials say they’re convinced of a link. International health bodies have said that’s not yet scientifically established, but they are on the alert.

The CDC said Friday it had acted “out of an abundance of caution” in issuing its call for pregnant women “to consider postponing travel to any area where Zika virus transmission was ongoing.”

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