There is some evidence that mosquitoes carry the parasite, the so-called Zika virus, which has been linked to an outbreak of microcephaly in Brazil and other countries.
There is no conclusive evidence that Zika causes microcepaly.
But scientists and health officials are worried.
There are two main explanations.
One is that mosquitoes are being infected by a mosquito-borne disease that causes a severe immune response that can lead to the development of Zika.
The other is that the mosquitoes themselves are carrying the virus, or that they have been infected with Zika and not noticed.
The new virus may have mutated.
Scientists are studying the viruses genetic code to see whether it contains mutations that can cause mutations in the virus that cause its symptoms.
If there are, it is possible that some of the virus-carrying mosquitoes are not producing enough copies of a protein that regulates the immune system.
The protein is called the microtubule-associated protein-4, or MAB-4.
It has been identified as a possible target of the new virus.
The virus also may have more recently mutated, causing it to evade the immune response.
A genetic mutation that affects the MAB is present in the Zika virus itself.
Scientists have linked a number of mutations to the new Zika virus that have not been previously found in the viruses genes, according to the National Institutes of Health.
“We have seen that some mutations in this virus have mutated in recent times,” said David W. Fidler, a professor of molecular genetics and molecular virology at the University of Pennsylvania.
The Zika virus has been found to be very stable in the environment, but scientists still are unsure about whether it is causing microcephi, or microcepsias.
The U.S. Centers for Disease Control and Prevention estimates that more than 3 million cases of microchronic illness have been reported since January.
Researchers say that more studies are needed to determine whether the virus is causing more cases of serious illness.
“What we are trying to do is look at whether there is a relationship between the viral load and the number of cases that we are seeing,” Fidlers co-author Michael J. P. Murphy said.
The CDC has recommended a mosquito control strategy that will include spraying with a chemical that kills the mosquitoes.
The mosquitoes that are being sprayed are also being tested for the virus.
That testing should help scientists identify the virus’s potential hosts, and the people most likely to be infected.
In the meantime, the virus can cause microceplasias, or severe birth defects, in children.
They can be fatal.
Scientists hope to be able to prevent the birth defects by treating babies with a drug called dabigatran, which can stop the virus from replicating and killing cells.
Scientists say that the treatment is safe and will be available by the end of the year.
If it is safe, they will be able begin to test the drug on pregnant women.
“This is a very exciting time,” said Dr. Sarah McNeill, a pediatrician at the Children’s Hospital of Philadelphia who is part of a team that has been working to develop the drug.
“There are many areas of research we want to do in the next year and a half, to understand more about how the virus might be transmitted from person to person, whether there are different ways that it is transmitted.”
It is not clear when or if the Zika drug will be ready to go into use.
The drug was approved by the Food and Drug Administration last year, but the drug is still not widely available.
It is available at pharmacies in the United States.
“The drug is a new vaccine, so there are a lot of challenges that need to be overcome before we can start testing it,” said P. Daniel Jones, the lead investigator for the drug, in a news release.
“But we believe that it will be effective against the current pandemic, and if it is successful, it will bring us one step closer to a vaccine for Zika.”
In other news, U.N. says Zika virus is spreading in Asia and Africa, including China, India and Vietnam.
The WHO says it is concerned that the Zika-like symptoms seen in people in these countries are a new type of viral infection that can be more dangerous and can be transmitted through sexual intercourse.
The disease is not spreading to the United State, though officials are investigating whether people there have had Zika infections.
The United States has seen an unusually high number of new cases of the disease, with more than 6,000 cases reported, and more than 1,400 deaths.
The Centers for Health and Human Services is warning people to stay home and stay in their homes if they have traveled to areas with high numbers of cases, such as the Central American nations of Guatemala and El Salvador.
The government is urging pregnant women to delay traveling to regions with a high number or presence of Zika infections, and to call their doctor if they think they have had a Zika infection. The latest