The Zika virus' spread across the world has shown very little signs of slowing. Its influence has grown so much that the World Health Organization called it a global health emergency, especially since it's been linked to causing brain development issues among toddlers, putting pregnant women at risk.
The virus has already touched down in the United States, with 30 cases so far. There have been six cases in California alone. The virus has also crept into Hawaii, Illinois, Florida and Arkansas.
The Zika virus has two strains, as illustrated in the map above — the Aedes aegypti and the Aedes albopictus. The former likely originated in Africa, spreading across the world, while the latter strain likely originated in Asia, the CDC explained.
The Zika virus spreads mostly through mosquitoes, which bite and drink blood from someone who has the disease and then transmits it someone else upon biting them.
Early symptoms for the virus are similar to the common cold, including a mild fever, headache or joint pain. Pregnant mothers have specifically seen their children suffer from brain development issues upon contracting the disease.